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REGIONAL ECONOMIC ISSUES
Working Paper Series

The Midwest Economy: Quantifying Growth
and Diversification in the 1980's
Robert H. Schnorbus and David D. Weiss

FEDERAL RESERVE BANK.
OF CHICAGO



W P -1991/12

The Midwest Economy: Quantifying Growth and
Diversification in the 1980's
Robert H. Schnorbus, Research Officer
David D. Weiss, Associate Economist

The decade of the 1980s has been a period of dynamic regional change within
the U.S. economy. Early in the decade, the eastern and western coasts were
thriving, while the Midwest was in sever recession.1 By the end of the
decade, the situation had virtually been reversed, with the Midwest emerging
as one of the most stable and prosperous regional economies. In the process
of rebuilding itself, the Midwest economy has undergone extensive structural
change that has altered its historical relationship with the national economy.
Over the decade, the region has become less sensitive to the growth trends of
the nation, as well as less vulnerable to business cycle fluctuations. Part of
the reason could be attributed to greater competitiveness among Midwest
industries and to less dependence on mature, cyclically sensitive industries.
Yet, the extent to which diversification of the Midwest economy has occur is
limited and depends on which economic variable is being analyzed—
employment has shown much more erosion than output.
The purpose of this Working Paper is to examine the decade of the 1980s in
the context of past employment, income, and output trends, in order to
determine to what extent the economic trends have changed and how these
changes may be affecting the structure of the Midwest economy.2 While the
underlying causes for the changing pattern are largely left to speculation, the
document is intended to serve as a general reference to economic change in
the Midwest. While emphasis is on comparative growth rates and elasticities
before and after 1980 at a fairly detailed industry level, aggregate measures
of economic change are calculated to provide a comprehensive view of
economic change In all four major factors of change are covered in the
sections below-interregional linkages, growth and cycle trends, structural
change, and diversification.
Interregional Linkages
Regional economic growth rarely occurs in a vacuum. Either the impetus to
growth must come from an expansion of the national economy (in which all

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regions are able to share in some degree) or growth must come from the
region's competitive strength that allows it to increase its share of the national
economy at the expense of other regions. While it is beyond the scope of this
paper to build a multi-equation structural model of the region's economy that
would identify specific causes of the Midwest's growth, it is possible to gain
useful insights into the growth process by analyzing the regions
responsiveness to national growth.
How closely is the Midwest tied to the nation? How do national fluctuations
effect the Midwest? We can answer these questions by comparing Midwest
fluctuations in employment with national employment fluctuations. Our
employment data is taken from the Bureau of Labor Statistics. As opposed to
survey of the business establishments, this data is based upon household
surveys. The employment data runs from 1956 through 1989. A clear picture
develops by looking at total employment and the manufacturing and services
sectors. Total employment is all non-agricultural employment. We define the
service sector to include finance and real estate, transportation and public
utilities, wholesale and retail trade, and services. Government is not included.
One method of making this comparison is to regress changes in the log of
quarterly Midwest employment on changes in the log of national employment.
When examining the data, it is apparent that there is a change in trends in
1974. For this reason we divide the data into two groups 1956-1973 and
1974-1989. (For equations, see Appendix B). This division is achieved by
use of a dummy variable. This variable is set equal to 0 prior to 1974 and to 1
during and after 1974. The dummy is then multiplied by the change in
national employment to create a second independent variable. Adding the
regression model coefficient from this variable to the coefficient of the change
in national employment yields a coefficient for the period from 1974 through
1989. While the coefficient on the change in national employment now yields
the relationship for only the pre 1974 period. Thus, by this method we are
able to differentiate the pre 1974 relationship from the later period.
Table 1 shows the results of this exercise. As one would expect, Midwest
manufacturing is more closely tied to the nation than is services. This
relationship holds for both periods.
However, for both sectors, the
relationship between national and regional fluctuations is weaker in the
second period.
The relationship may differ from expansions to contractions. To test this
hypothesis we separate the quarters of national growth in total employment
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from those were employment decreased. However, now there are two
variables to represent change in the national employment level. The first is
for expansions. This variable is set equal to 0 when the change in the total
U.S. employment level is negative and equal to the change in the log of U.S.
employment when the change is positive. The second variable, for
contractions, works in a similar manner. When the change is positive, this
variable is set equal to 0 otherwise it is equal to the change. To accommodate
the structural break two additional variables are needed. The dummy variable
is multiplied by each of the two variables representing change.
The results from this experiment are in Table 2. Over the entire 1956-1989
period we find that fluctuations in Midwest manufacturing employment is
slightly more correlated with national fluctuations during contractions.
Services show a different relationship. Not only is the Midwest service sector
employment more closely correlated with the nation during expansions but
there is no clear correlation during contractions. For both the early and later
time periods these results hold true.

Trends and Cycles
Because of business cycles, growth rates can be misleading. If the dates from
which the growth rates are calculated are at different points of the business
cycle, the growth rate can over or under estimate the actual trend. So being
able to compensate for business cycles is important to understanding long
term growth. What is the source of the Midwest's cyclical volatility? As one
might expect, much of the nation's volatility comes from its manufacturing
sector. With a higher concentration in manufacturing than the nation on
average, one would expect that the Midwest would be at least as sensitive to
the business cycle as the nation. In fact, the Midwest's industrial structure has
given it a greater sensitivity to business cycles, but not simply because of its
manufacturing base.
To compensate for the business cycles we separately regress employment and
output for an industry not only on time but also on the GNP gap. The GNP
gap is the difference in the log of GNP and the log of potential GNP. When
the economy is strong the GNP gap is positive. When the economy is weak,
in a state of decline, the GNP gap is negative. The coefficient on time can
then be interpreted as the trend growth rate, while the coefficient of the GNP
gap tells us the percent change in employment or output that can be expected

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given a one percentage point change in the GNP gap. We use industry data at
both the one and two digit SIC level. (For list of SIC codes, see Appendix A.)
From 1956 through 1989 employment has been growing more slowly in the
Midwest than the nation (Table 3). While no Midwest industry had an
absolute loss of employment during this period, the manufacturing sector had
no growth. Deindustrialization is a decrease in manufacturing share of total
employment. Since 1974 both the Midwest and the nation have been
deindustrializing . During this deindustrialization Midwest manufacturing had
an absolute loss in employment. For the periods 1956-1974 and 1974-1989
no other industry either in the Midwest or nation had an absolute loss in
employment.
Given manufacturing dominance of the Midwest economy and the
deindustrialization of the nation, it is not surprising that Midwest
manufacturing performed so poorly. What is surprising is that, in terms of
employment, between 1956 and 1989 every sector, at the one digit level of the
economy grew faster at the national level than in the Midwest (Table 4).
During the 1956-1974 period only Midwest mining and services were growing
more quickly than their national counterparts. But since 1974, every sector
has underperformed the national standard. Across both periods, the services,
FIRE, and trade have been the fastest growing sectors while the goods
producing sectors have lagged.
In terms of economic cycles, for the pre 1974 period, manufacturing reacted
the most to fluctuations in the economy. While the services either were not
effected by fluctuations or were counter cyclical. During the post 1974
period, in both the Midwest and the nation, construction became the most
cyclical sector, although manufacturing was not far behind. And no sector
was counter cyclical.
However, employment may not be the best method for examining industrial
competitiveness and growth. As labor productivity increases, through
technological change or substitution of capital for labor, employment may
decrease while income or output actually increase. Therefore, examining
output may give a clearer picture of the economy. BEA gross state product
(GSP) data is used as a measure of output. GSP data are similar to value
added. These two measurement differ in that central administrative offices,
i.e. headquarters, research and development laboratories, data processing
facilities, are allocated to the state where they are located, rather than the state
were production takes place. Also, purchased services are removed.3 GSP

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data are only available from 1963 through 1986. The change in time periods
should not have a qualitative effect on the results. When we examine the
trends of the cyclically adjusted model we find essentially the same results as
with employment (Table 5). For both the 1963-74 and 1974-1986 periods,
every industry’s cyclically adjusted growth in output is lower than the nation’s.
For both the nation and the region, manufacturing and construction are by far
the most cyclically sensitive sectors.
Does the aggregation of industries hide trends in smaller industries that are
different than the larger pattern? At the two digit SIC level some of the
Midwest industries fair better. Although when looking at the employment
model, we find that no sectors in the Midwest grew more quickly then in the
nation (Table 6), when looking at output we find that between 1963 and 1974,
six of the 21 manufacturing sectors in the Midwest outperform the national
industry (Table 7). Three of these sectors are durable goods and three are
nondurables. Other Midwest industries that did well in the early period were
non-bank financial institutions, health services and the small sectors of motion
pictCfrfcs and miscellaneous repairs. However, these successful industries are
few and far between. The one highlight is that three of the Midwest's large
manufacturing industries, food processing, chemicals, and primary metals all
grew faster than the industry at the national level. During the more recent
1974-1986 period, the Midwest industries do not perform any better. The non­
bank financial institutions still remain strong and air transportation and coal
mining are now growing more quickly than the nation. However, there are
now only three manufacturing sectors that are outperforming the nation and
they each represent only a small share of Midwest manufacturing output.
These industries are textile mills, apparel and lumber products. Only two of
the over fifty industrial sectors grew more quickly in the Midwest than in the
nation during both time periods; lumber and wood products and non-bank
credit agencies. Not a great showing.
Not only are the highly cyclical industries concentrated in the Midwest but
those in the Midwest are significantly more cyclical than the same industry in
the U.S. For almost all durable goods sectors, a one percentage point change
in the GNP gap will cause over a 1.5% change in the employment level for the
Midwest in that sector. What is even more striking is the difference between
the Midwest and the nation. For example, SIC 34, metal fabricating, has a
GNP gap coefficient in the Midwest model of 1.86, while the national model
has a coefficient of only 1.27, a difference of over half a percentage point. Ch­
in other words, the Midwest has fifty percent more change in employment
levels, for the fabricated metals industry, due to fluctuations in the national
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economy, than does the same industry at the national level. The output
version of the cyclical model yields many of the same results. Of the 53 GSP
sector models, thirty have coefficients for the GNP gap variable for both the
Midwest and nation that are significantly different from zero. Of these thirty,
the Midwest has larger coefficients in twenty seven of the sector. Across the
board, in nondurable goods, durable goods, transportation and utilities, and
business services, the Midwest shows significantly more responsiveness to the
GNP gap than does the U.S.

Structural Change
As some industries grow quickly, their share of the economy increases. This
shifting of industrial importance is known as structural change. One
quantative method describes this change by looking at the change in each
industry’s share of the economy. Our structural change index is the sum of the
absolute changes of each industry’s share of the total economy (see Appendix
B for the forumla used to construct this index).
On comparing the Midwest with the nation, it is apparent that both areas have
similar rates and patterns of structural change (Chart 1). However, when the
states are examined, a different view emerges (Chart 2 and Table 8). At
points, Iowa shows a cumulative change almost twice that of some other
Midwest states. Also, Iowa and Michigan show a tremendous amount of
fluctuation. Often moving away from and then returning to early structures.
What sectors of the economy are causing these changes?
Structural change in the national economy was due to the shrinking, relative to
total output, in the oil and gas extraction, primary metals, and railroad sectors
and expanding machinery, real estate services, business services, and health
care service sectors (Table 9). The Midwest was similar in that it was also
driven by a shrinking primary metals and railroad sectors and an expanding
non-electrical machinery, real estate services, business services, and health
service sectors. The differences lie in that the oil and gas extraction and
electric and electronic machinery sectors showed almost no change relative to
the Midwest economy. Also, unlike the national chemical industry, the
expanding Midwest chemical industry changed the industrial structure of the
region.
Except for oil and gas extraction, Illinois' structural change was driven by the
same industries as the Midwest. Iowa was also similar to the Midwest except

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Chart 1

Index of structural change
index

Chart 2

Index of structural change by state
index

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that a shrinking agriculture sector and expanding banking sector drove much
of its structural change and the primary metals sector had little effect. Also,
like the entire economy, the nonelectrical machinery sector expanded but at a
much faster rate, accounting for over 20% of the structural change.
Wisconsin was also like the Midwest, except that the chemical industry and
primary metals played little role and paper products grew substantially while
transportation equipment declined relative to the economy. Except for the
expansion of the transportation sector, Ohio had the same change as the
Midwest. Except for the declining auto and associated fabricated metals
sectors, Michigan also followed the Midwest pattern of structural change.
Finally, there is Indiana. The real estate sector was the cause of little
structural change. More like the nation than pothe Midwest, agriculture
decreased its share of output and the associated food processing industry
declined even more rapidly. Also more like the nation than the Midwest, was
the expansion of electric machinery in Indiana.

Diversification
All of these patterns of structural change have at least one major characteristic
in common. Both the Midwest and each state in the Midwest are becoming
more like the nation as a whole. The only exception is Wisconsin which has
remained relatively unchanged compared to the nation. The process of the
industrial structure becoming more like the nation is known as diversification.
Assuming the national economy is in perfect balance, a perfectly diversified
regional economy should have the same structure as the nation. Of course,
because of local competitive advantages, stage of development of the local
economy, and other factors that are unique to a sub-national economy, no
regional economy is likely to have the same exact structure as the nation.
Nevertheless, the industrial structure of the nation represents a standard of
diversity and, therefore, is used here to derive a quantitative measure of a
region's diversification.
To that end, an index of diversification is constructed by summing up the
absolute difference between output share of each industry in the region and
the nation (see Appendix B). A tool that is often used in conjunction with
diversification measures is the location quotient. The location quotient is a
measure of industrial concentration. It is derived by dividing the industry's
share of the regional economy by the industry's share of the national economy
(see Appendix B). If the location quotient is one, then the region has the same
industry intensity as the nation. If the location quotient is greater than one

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then the industry is concentrated in the region, its share of the regional
economy is greater than the industry's share of the national economy (location
quotients and industry shares of the national economy are reported in
Appendix C). The Midwest showed no tendency to become more like the
national economy until the recession of the early eighties (Chart 3). At this
time rapid loss of the manufacturing sector caused the Midwest's economy to
take on a structure more like the nation. This same pattern holds for the
heavily industrialized states of Michigan, Indiana, and Ohio (Chart 4). Illinois
and Iowa have had slow but steady diversification and Wisconsin contrasts the
pattern, showing dediversification during the eighties (Chart 5).
Which industries are driving the diversification?. As a share of output, all of
the Midwest states have small oil and gas extraction industries. As the oil and
gas extraction industry's share of the nation's output declined, the Midwest
states became more like the nation. Thus except for Illinois, the oil and gas
sector contributed a large share of the Midwest states' move towards an
economy more like the nation's. This change is unusual in that it was due
more to changes in the national economic structure than to reallocation of
resources within the region. Another unusual industry is SIC 33, primary
metals. Between 1969 and 1986, relative to the nation, every state in the
Midwest became more concentrated in primary metals. However, because
this industry more than halved its share of total output, this industry actually
caused the diversification index of each state to decrease. As would be
expected, due to the historically high concentration of the machinery industry
in the Midwest, the electrical and nonelectrical machinery sectors, overall,
were major contributors towards the diversification of the Midwest (Table
10).
No one sector dominated Illinois's diversification. The two most important
sectors were SIC 35, non electrical machinery, and SIC 36, electrical and
electronic machinery. Two industries that countered the diversification were
SIC 28, the chemical industry and SIC 62, security and commodity services.
In Michigan the diversification can be attributed to the dominant auto industry
and its suppliers. As the auto industry's share of Michigan's economic output
decreased it brought down its suppliers; metal fabricating, and non electrical
machinery. Unfortunately, Michigan was unable to jump on the silicon band
wagon. As SIC 36 doubled its share of the national economy, Michigan's
electronic machinery sector grew, but not as fast. So this sector pushed the
Michigan economy away from the national norm.

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Chart 3

Diversification index for the the Midwest
index

Chart 4

Diversification indexes by state
index

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Chart 5

Change in diversification indexes by state
change, 1963-1986

Indiana's economy, following the Midwest pattern, moved towards the
national norm in oil and gas extraction and primary metals. No other industry
dominated the picture. Food processing, SIC 20, had a large shift from a
location quotient of 1.46, a concentration almost fifty percent higher than the
nation to a location quotient of 1.09, or a concentration nine percent higher
than the nation. But this shift was countered by the chemical industry, SIC
28, whose location quotient went from 1.26 to 1.60, and trucking and
warehousing, SIC 42, which increased its location quotient from 1.30 to 1.75.
Also, countering the diversification was real estate services. However, this
change was due to the industry growing in the nation, while its share of the
Indiana economy remained almost unchanged.
Like Indiana, much of the diversification of the Ohio economy was due to fuel
extraction and primary metals. Leading the move away from the national
economy was the auto industry. While the auto industry maintained a
constant share of the national economy, it grew in Ohio. Transportation
equipment, SIC 37, had its location quotient in Ohio grow from 1.88 to 2.66.

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Along with oil and gas extraction, non electrical machinery and real estate
services dominated Iowa’s diversification. In 1963, real estate services
accounted for 3.4 percent more of Iowa's economy than that of the nation's.
By 1986 the difference was only 0.3 percent and in the other direction. This
move towards the national economy was countered by the nonelectrical
machinery sector. As the sectors share of the nation's economy doubled, the
already concentrated industry's share of the Iowa economy increased by over
120 percent. Further concentrating the sector in Iowa.
With a slightly increasing diversification index, Wisconsin is the state that
goes against the Midwest trend. A large shift towards the national norm in
transportation equipment was overwhelmed by the rapidly expanding paper
and products sector, SIC 26. In 1963, with a location quotient of 3.57,
Wisconsin was highly concentrated in paper products. As paper products
increased its share of the national economy, it grew even faster in Wisconsin,
slowing the diversification process. Nonelectrical machinery is an industry
that is concentrated in Wisconsin. Between 1963 and 1986 Wisconsin's
machinery sector grew more slowly then the nation's. So the industry became
less concentrated. Normally this change would be considered diversification.
But because this was a rapidly growing industry, the diversification index,
which looks at differences in the share of the economy, actually increased due
to this change. It is situations like this that show the importance of using
these indicators in combination, rather than individually.
Concluding Remarks
Economic change in a region is a complex process that often defies
conventional wisdom. The Midwest has undergone dramatic change over the
last twenty years, but remains a predominantly manufacturing-based
economy. Diversification, when measured by output, is far less extensive
than suggested by the employment changes that have occurred in the region.
Yet the impact of that diversification on growth and cyclical sensitivity has
been significant. Policy makers and analysts must be aware of the nature of
economic changes in the Midwest if their analysis and decisions are to reflect
the real impact of regional change on the growth potential of the region. To
that end, we hope that the charts and tables contained in this document will
serve as a reference for those who want to have a better understanding of the
direction that Midwestern states have been taking in recent years.

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Footnotes
*The Midwest is defined as the Great Lakes states (Illinois, Indiana, Michigan, Ohio, and
Wisconsin), and Iowa.
^For more discussion of these issues see ’’Interregional Competitiveness and Diversification", by
Schnorbus and Weiss, in The Great Lakes Economy: Looking north and South, Federal Reserve
Bank of Chicago and the Great Lakes Commission.
q

JFormore information, see Testa and Weiss, "Calibrating Manufacturing Decline in the Midwest:
Value Added, Gross State Product, and All Points Between."

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Table 1

Interregional model with structural break-employment

Sector
Total
Manufacturing
Services

Intercept

Change
1956-73

Dummy

Change
1974-89

1.456
1.398
1.166

-0.181
-0.109*
-0.219*

1.275
1.289
0.947

-0.0042
-0.0024
-0.0014*

R2
.85
.89
.29

Services defined as: fire + tpu + trade + services.
*Not significant at 5% confidence level.
Table 2
Interregional model with expansion and contraction-employment

Sector

Intercept

-0.0036
Total
Manufacturing -0.0020
Services
-0.0010*

Expansion
1.281
1.276
0.995

Contraction

R2

1.456
1.349
0.388*

0.84
0.89
0.26

Services defined as: fire + trade + service + tpu.
*Not significant at 5% confidence level.

Interregional model with expansion and contraction-employment with
structural break

Sector

Expansion Contraction Ex,mansion Contraction
R2
1974-89
Intercept 1956-73
1956-73
19;74-89

Total
-0.0032
Manufacturing -0.0019
Services
-0.0012*

1.34
1.34
1.15

2.32
1.55
0.50*

1.16
1.22
0.94

1.44
1.33
0.48*

0.85
0.88
0.28

Services defined as: fire + trade + service + tpu.
*Not significant at 5% confidence level.

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Table 3

Trend and cycle model by sector-employment
Midwest
Sector
Mining
Construction
Manufacturing
FIRE
Services
TPU
Trade
Total

United States
Sector
Mining
Consturction
Manufacturing
FIRE
Services
TPU
Trade
Total

Intercept
3.51
5.54
8.75
4.56
4.73
6.40
6.38
8.42

Intercept
6.05
6.73
9.51
5.78
6.17
7.43
7.50
9.41

Time
0.0094*
0.0117
-0.0040*
0.0276
0.0389
0.0049
0.0233
0.0163

Time
0.0068*
0.0200
0.0041*
0.0341
0.0448
0.0134
0.0296
0.0243

GNP Gap
0.94*
1.09
1.28
0.04*
0.12
0.48
0.39
0.57

GNP Gap
0.83
1.01
0.88
0.09
0.14
0.35
0.31
0.39

R2
.04
.22
.50
.89
.92
.29
.72
.63

R2
.05
.56
.46
.95
.98
.64
.91
.85

*Not significant at 5% confidence level.

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Table 4

Trend and cycle model with structural break-employment
Midwest
Sector

Mining
Construction
Manufacturing
FIRE
Service
TPU
Trade
Total

Intercept
1956-73
2.20
4.55
7.61
4.38
2.99
6.02
5.86
7.80

Time
1956-73
0.029
0.027
0.013
0.030
0.066
0.011
0.031
0.026

United States
Intercept
Sector
1956-73

Time
1956-73

Mining
Construction
Manufacturing
FIR E
Service
TPU
Trade
Total

0.009*
0.027
0.016
0.035
0.044
0.017
0.034
0.030

5.88
6.26
8.75
5.71
6.23
7.19
7.21
9.06

GNP Gap
1956-73
-0.98*
0.57*
1.29
-0.11*
-1.41
0.30*
0.23
0.51

GNP Gap
1956-73
0.65*
0.14*
0.74
-0.09*
0.04*
0.17*
0.16
0.27

Intercept
1974-89
5.25
6.66
9.92
4.72
5.41
6.81
6.89
9.11

Time
1974-89
-0.011*
-0.002*
-0.018
0.026
0.033
-0.000*
0.017
0.008

Intercept
1974-89

Time
1974-89

6.40*
7.25
10.24
5.85
6.13
7.67
7.74
9.78

0.003*
0.014
-0.004*
0.033
0.045
0.011
0.027
0.020

GNP Gap
1974-89
0.91
1.42
1.39
0.12
0.43
0.64
0.47
0.66

GNP Gap
1974-89
0.99
1.51
0.98
0.18
0.19
0.47
0.39
0.47

R2

.28
.29
.67
.93
.99
.44
.86
.79

R2

.63
.68
.55
.96
.98
.76
.98
.94

*Not significant at the 5% level

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Table 5

Trend and cycle model with structural break-output
Midwest
Sector

Total
Mining
Construction
Manufacturing
FIRE
Service
TPU
Trade

United States
Sector

Total
Mining
Construction
Manufacturing
FIRE
Service
TPU
Trade

Intercept
1963-73

Time
1963-73

10.95
9.79
11.60
9.34
9.01
8.26
7.41
8.57

0.031
-0.016
-0.017*
0.037
0.030
0.038
0.047
0.039

Intercept
1963-73

Time
1963-73

12.20
9.79
12.66
10.42
9.55
9.57
8.63
9.71

0.035
0.028
-0.009
0.039
0.045
0.043
0.051
0.045

GNP Gap Intercept
1974-86
1.57
0.30*
2.96
3.07
0.46
0.85
1.29
1.16

12.42
8.32
13.01
11.60
9.47
9.01
10.47
10.14

GNP Gap Intercept
1974-86
0.99
0.32*
2.16
2.19
0.41
0.52
0.90
0.91

12.97
12.24
12.09
11.40
10.69
9.75
10.69
10.54

Time
1974-86
0.011
0.004*
-0.035*
0.007
0.023
0.028
0.006
0.017

Time
R^
1974-86
0.025
-0.006*
-0.001*
0.026
0.029
0.041
0.024
0.033

*Not significant at the 5% level of confidence

FRB CHICAGO Working Paper
June 1991, WP-1991-12




.98
.65
.88
.94
.98
.99
.99
.95

17

.99
.58
.91
.99
.99
.99
.99
.98

Table 6

Trend and cycle model by industry-employment
Midwest
Industry*
20

22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
48
49
50
52
53
60
80

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Intercept
6.94
4.38
6.16
4.12
4.62
5.57
4.97
5.31
5.84
5.05
7.09
6.80
8.51
7.67
7.69
8.09
7.56
4.22
5.36
8.74
5.47
4.46
5.65
6.35
6.04
3.55
3.59

Time
0.013
0.025
- 0.023
0 . 004 '
-

-

o .o o r

0.006
0.008
o .o o r

0.038
0.005
- 0.051
- 0.022
- 0.032
- 0.017
- 0 . 014 '
- 0.024
- 0.013
0 . 006 '
- 0.016
- 0.054
- 0 . 003 ’
0.007
0.015
0.020
- 0 . 003 ’
0.021
0.038

-

GNP Gap
0.27
1.18
1.52
2.19
1.59
0.91
0.23
0.29
0 . 22 *
1.98
0.62
1.37
1.75
1.86
1.27
1.53
1.95
1.01
0.86
0.57
- 0 . 02 *
0 . 04 *
0.41
0.49
0.54
0 . 00 *
- 0 . 08 *

Ft2
.50
.23
.76
.62
.50
.54
.15
.16
.27
.56
.93
.62
.47
.65
.25
.69
.46
.38
.23
.52
.02
.14
.56
.73
.22
.35
.79

Table 6 (cont'd)

United States
Industry*
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
48
49
50
52
53
60
80

Intercept

Time

7.81
5.75
8.59
8.47
6.64
5.95
6.64
5.42
6.74
6.08
5.46
9.11
7.33
9.13
7.88
7.15
7.03
7.16
4.58
6.90
9.44
6.44
5.22
5.88
4.52
7.23
4.92
4.72

-0.005
-0.019
-0.023
-0.017
-0.001*
0.003*
-0.001*
0.022
0.003*
-0.010
0.014
-0.047
-0.011
-0.028
-0.007*
0.006*
0.007*
0.005
0.023
-0.011
-0.042
0.009
0.018
0.026
0.024
0.006
0.029
0.047

GNP Gap
0.26
-0.16*
1.23
1.07
2.17
1.71
0.72
0.30
0.34
-0.30*
1.57
0.87
1.22
1.33
1.27
0.83
1.06
1.57
0.50
1.09
0.67
-0.17*
0.03*
0.45
0.89
0.66
-0.01*
-0.08*

R2
.32
.41
.78
.62
.65
.62
.43
.72
.21
.08
.65
.50
.59
.34
.50
.19
.39
.63
.41
.50
.44
.11
.67
.70
.86
.60
.63
.94

NOTE: SIC 22 does not include IA, IN. SIC 23: IN, SIC 24: IA. SIC 25: IA. SIC
29: IA, OH, WI.SIC 31: IA, IN. SIC 38: IA. SIC 39: IA, OH.
*For industry list see appendix.

FRB CHICAGO Working Paper
June 1991, WP-1991-12




19




Table 7

Trend and cycle model with structural breaks by Industry-output
Midwest
Industry

01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39
40
41
42
44
45
46

FRB CHICAGO Working Paper
June 1991,WP-1991-12

Intercept
1963-73

Time
1963-73

GNP Gap

Intercept
1974-86

Time
1974-86

9.19
6.30
4.95
5.78
11.16
4.62
7.04
2.46*
4.70
4.82
4.11
5.62
5.46
7.24
3.80
5.73
5.08
7.49
6.83
8.15
7.71
7.90
5.56
6.11
6.83
5.19
5.43
8.13
9.33
5.15
5.21
1.68
1.45*

0.006*
0.014
0.009*
0.025
-0.046
0.031
0.034
0.024*
0.017*
0.034
0.050
0.028
0.042
0.025
0.074
0.037
0.049
-0.012
0.024
0.025
0.030
0.030
0.053
0.056
0.022
0.034
0.032
0.010*
-0.031
0.057
0.012*
0.082
0.070

0.72*
-0.39*
5.67
0.43*
0.26*
2.81
-0.13*
-1.56*
0.83*
2.49
2.13
2.91
1.65
1.11
1.12
1.25*
2.78
0.53*
2.20
4.25
3.32
3.89
3.35
4.96
3.12
2.64
1.93
3.13
1.39
2.62
1.47
3.29
0.86*

9.32
3.99
14.36
4.86
7.51
10.44
8.47
15.86
3.42
6.08
6.62
6.61
6.91
9.03
6.78
9.71
7.08
8.97
9.70
13.53
9.45
8.23
7.79
10.80
8.19
6.14
7.71
13.94
8.93
9.46
6.66
6.31
9.44

0.005*
0.042
-0.114
0.035
0.004*
-0.048
0.013
-0.153
0.033
0.017
0.014
0.015
0.022
0.000*
0.032
-0.016*
0.021
-0.032
-0.015
-0.047
0.005*
0.027
0.022
-0.007*
0.004
0.022
0.002*
-0.066
-0.026
-0.000*
-0.007*
0.019
-0.040

20

R2

.28
.96
.84
.92
.47
.92
.79
.26
.61
.83
.82
.91
.90
.94
.97
.48
.91
.90
.72
.89
.90
.81
.94
.66
.60
.78
.55
.79
.94
.93
.29
.91
.68

Table 7 (cont'd)

Industry

Intercept
1963-73

Time
1963-73

GNP Gap

47
60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88

5.76
5.59
3.75
3.78
5.62
6.34
9.00
6.07
8.00
5.64
3.92
5.52
3.38
6.36
5.43
6.98
4.97
6.53
4.27
11.21

0.010*
0.048
0.041
0.049
0.039
0.023
0.025
0.025
0.007*
0.047
0.058
0.022
0.039
0.015
0.061
0.020
0.040
0.027
0.058
-0.056

1.41
-0.12*
-1.10*
0.22*
0.45*
0.64
0.58
1.53
1.26
1.41
1.76
0.86
0.81*
0.51*
0.05*
0.93
0.02*
0.42*
2.00
0.79

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Intercept
1974-86
2.28
8.95
1.03
2.01
7.04
7.65
9.07
9.89
8.94
4.76
6.79
6.20
7.41
6.17
7.46
7.59
6.85
7.21
5.96
7.82

Time
1974-86
0.059
0.002*
0.075
0.072
0.020
0.006*
0.025
-0.026
-0.007*
0.060
0.020
0.014
-0.015*
0.019*
0.034
0.012
0.014
0.018*
0.036
-0.011*

21

R2

.98
.80
.96
.89
.93
.85
.96
.87
.66
.96
.97
.99
.47
.89
.97
.96
.87
.93
.95
.87

Table 7 (cont'd)

United States
Industry
Intercept
1963-73

Time
1963-73

GNP Gap

Intercept
1974-86

Time
1974-86

01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39
40
41
42
44
45
46
47

0.005*
0.019
0.019*
0.019
0.029
0.035
0.032
0.024
0.045
0.039
0.045
0.044
0.051
0.027
0.069
0.032
0.065
-0.003*
0.030
0.019
0.042
0.042
0.063
0.061
-0.005*
0.062
0.046
0.004*
-0.024
0.062
0.023
0.094
0.070
0.024

-0.70*
0.74
2.09*
0.22*
0.22*
1.91
-0.13*
-0.12*
1.37
1.47
2.39
2.70
1.47
0.89
0.99*
0.61*
2.06
1.21*
2.22
3.95
2.67
3.02
2.80
4.87
2.14
2.16
1.94
2.65
0.96
2.11
1.06
2.45
0.75
1.10

9.35
5.38
11.50
7.10
12.41
7.73
8.81
10.98
7.22
8.78
8.91
7.36
8.10
8.66
8.25
10.30
6.73
10.79
9.50
14.05
9.76
6.58
5.88
10.04
8.77
6.11
8.26
12.91
10.05
10.32
8.37
8.52
7.73
3.61

0.022
0.050
-0.043
0.030
-0.010*
0.010
0.026
-0.024
0.030
0.013
0.012
0.024
0.026
0.023
0.033
-0.002*
0.040
-0.031
0.006*
-0.042
0.014
0.061
0.064
0.008*
0.022
0.049
0.015*
-0.035
-0.015
0.007*
0.007*
0.018
0.010
0.066

FRB CHICAGO Working Paper
June 1991, WP-1991-12




10.65
7.68
6.79
7.92
9.58
5.91
8.46
7.40
6.17
6.91
6.48
5.84
6.33
8.42
5.61
7.81
4.98
8.66
7.71
9.40
7.71
7.91
6.02
6.13
10.76
5.08
6.01
9.93
10.70
6.23
7.14
2.94
3.28
6.61

22

R2

.70
.96
.61
.96
.51
.96
.96
.36
.84
.84
.94
.94
.94
.99
.96
.67
.98
.74
.80
.84
.97
.89
.99
.66
.47
.99
.74
.87
.83
.96
.70
.94
.96
.99

Table 7 (cont'd)

Industry

Intercept
1963-73

Time
1963-73

GNP Gap

Intercept
1974-86

Time
1974-86

60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88

7.10
6.26
5.55
7.30
7.48
9.20
6.99
9.29
6.42
5.27
7.28
5.79
7.82
7.08
7.88
6.71
7.82
5.68
12.15

0.049
0.027
0.053
0.038
0.029
0.045
0.039
0.010*
0.061
0.062
0.020
0.038
0.019
0.060
0.031
0.041
0.031
0.063
-0.041

-0.13*
0.89
0.46*
0.32*
0.63
0.49
1.00
0.79
1.02
1.40
0.27*
1.09*
0.34*
-0.05*
0.40
-0.056*
0.34*
1.10
0.74*

8.66
4.22
4.52
7.73
8.00
10.54
8.84
9.34
6.06
7.23
6.57
7.21
6.17
8.28
7.79
8.14
8.14
7.15
8.98

0.028
0.055
0.066
0.032
0.023
0.027
0.014
0.009*
0.066
0.036
0.031
0.019
0.042
0.044
0.031
0.021
0.027
0.044
0.001*

*Not significant at the 5% level of confidence.

FRB CHICAGO Working Paper
June 1991, WP-1991-12




23

R2

.98
.98
.90
.98
.88
.99
.98
.46
.98
.98
.98
.90
.98
.99
.99
.95
.97
.96
.80

Table 8

Structural change index by state

Year
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86

u.s.

Indiana Iowa

Michigan Ohio

Wisconsin

0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.019
0.033
0.044
0.043
0.054
0.066
0.069
0.077
0.090
0.102
0.106
0.113
0.124
0.138
0.146
0.153
0.157
0.160
0.172
0.186
0.190
0.196
0.208

0.025
0.041
0.051
0.044
0.063
0.073
0.067
0.077
0.081
0.101
0.100
0.093
0.108
0.127
0.133
0.132
0.136
0.151
0.178
0.188
0.180
0.184
0.192

0.030
0.043
0.062
0.058
0.070
0.085
0.088
0.102
0.107
0.124
0.137
0.135
0.138
0.143
0.155
0.162
0.179
0.181
0.200
0.230
0.216
0.218
0.231

0.035
0.044
0.062
0.055
0.076
0.093
0.086
0.092
0.120
0.135
0.132
0.133
0.153
0.183
0.182
0.182
0.174
0.183
0.206
0.228
0.229
0.235
0.247

0.035
0.031
0.051
0.057
0.095
0.108
0.100
0.130
0.150
0.157
0.174
0.161
0.194
0.225
0.214
0.234
0.236
0.206
0.210
0.281
0.263
0.262
0.245

0.024
0.051
0.054
0.053
0.073
0.087
0.080
0.090
0.088
0.113
0.094
0.112
0.146
0.165
0.158
0.139
0.151
0.177
0.225
0.207
0.170
0.169
0.187

0.023
0.037
0.045
0.044
0.061
0.073
0.075
0.087
0.093
0.106
0.107
0.109
0.112
0.127
0.133
0.132
0.137
0.164
0.199
0.208
0.195
0.202
0.211

0.027
0.037
0.055
0.064
0.060
0.080
0.079
0.071
0.090
0.114
0.117
0.101
0.118
0.123
0.129
0.128
0.137
0.150
0.156
0.164
0.171
0.183
0.195

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Midwest Illinois

24

Table 9
Structural change among states-1963 to 1986

Industry

u.s.

Midwest

Total
01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39
40
41
42
44
45
46
47

0.2084
0.0091
0.0003
0.0010
0.0005
0.0210
0.0003
0.0029
0.0023
0.0001
0.0011
0.0003

0.1921
0.0070
0.0002
0.0004
0.0002
0.0067
0.0009
0.0027
0.0002
0.0001
0.0002
0.0010
0.0001
0.0017
0.0034
0.0079
0.0016
0.0026
0.0013
0.0040
0.0204
0.0066
0.0200
0.0054
0.0005
0.0005
0.0011
0.0005
0.0100
0.0030
0.0025
0.0004
0.0026
0.0002
0.0009

0.0000
0.0009
0.0015
0.0043
0.0031
0.0023
0.0016
0.0023
0.0128
0.0026
0.0197
0.0112
0.0003
0.0041
0.0037
0.0002
0.0084
0.0038
0.0008
0.0010
0.0033
0.0002
0.0009

FRB CHICAGO Working Paper
June 1991 WP-1991-12




,

Illinois

Indiana

Iowa

Michigan

Ohio

0.1874
0.0043
0.0002
0.0017

0.2111
0.0041
0.0004

0.2313
0.0081
0.0001

0.2474
0.0128
0.0001

0.2451
0.0274
0.0025

0.0001
0.0217
0.0010
0.0055

0.0009
0.0049
0.0007
0.0106
0.0002
0.0001
0.0002
0.0017
0.0007
0.0003
0.0009
0.0109
0.0153
0.0076
0.0002
0.0031
0.0371
0.0017
0.0161
0.0158
0.0046
0.0046
0.0038
0.0011
0.0099
0.0038
0.0077
0.0004
0.0014
0.0000
0.0002

0.0006
0.0001
0.0012
0.0016

0.0008
0.0009
0.0001

0.0004
0.0005
0.0023
0.0007
0.0019
0.0001
0.0106
0.0006
0.0025
0.0000
0.0038
0.0058
0.0056
0.0512
0.0084
0.0053
0.0018
0.0019
0.0011
0.0119
0.0019
0.0004
0.0003
0.0006
0.0004
0.0002

0.0001
0.0036
0.0006
0.0031
0.0015
0.0017
0.0025
0.0004
0.0033
0.0004
0.0023
0.0199
0.0130
0.0139
0.0043
0.0096
0.0017
0.0014
0.0019
0.0061
0.0020
0.0021
0.0013
0.0023
0.0001
0.0011

0.0001
0.0018
0.0002
0.0016
0.0002
0.0061
0.0093
0.0038
0.0042
0.0019
0.0046
0.0130
0.0075
0.0123
0.0036
0.0013
0.0001
0.0010
0.0011
0.0125
0.0033
0.0025
0.0002
0.0058
0.0002
0.0018

Wisconsin
0.1946
0.0036
0.0000

0.0003
0.0008
0.0002
0.0007
0.0005
0.0003
0.0004
0.0000
0.0017
0.0013
0.0003
0.0040
0.0116
0.0061
0.0035
0.0009
0.0067
0.0297
0.0083
0.0172
0.0042
0.0088
0.0005
0.0017
0.0003
0.0108
0.0035
0.0023
0.0003
0.0013
0.0005
0.0005

0.0001
0.0006
0.0025
0.0004
0.0000

0.0032
0.0007
0.0136
0.0017
0.0030

0.0001
0.0062
0.0047
0.0009
0.0063
0.0018
0.0417
0.0025

0.0120
0.0014
0.0015
0.0003
0.0074
0.0028
0.0005
0.0009

0.0001
0.0005

25

Table 9 (cont'd)
Industry

60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88

u.s.

Midwest

0.0028
0.0006
0.0037
0.0015
0.0003
0.0148
0.0006
0.0037
0.0197
0.0027
0.0001

0.0004
0.0014
0.0036
0.0022
0.0006
0.0095
0.0019
0.0038
0.0173
0.0024
0.0001
0.0002
0.0001
0.0203
0.0009
0.0007
0.0003
0.0058
0.0038

0.0000
0.0004
0.0179

0.0000
0.0001
0.0001
0.0057
0.0054

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Illinois
0.0046
0.0033
0.0080
0.0020
0.0001
0.0123
0.0022
0.0048
0.0255
0.0030

0.0000
0.0001
0.0001
0.0168
0.0004
0.0015
0.0005
0.0060
0.0034

Indiana
0.0068
0.0009
0.0011
0.0018
0.0011
0.0043
0.0012
0.0023
0.0110
0.0036
0.0009
0.0004

0.0000
0.0242
0.0011
0.0002
0.0001
0.0029
0.0038

Iowa
0.0144
0.0013
0.0011
0.0033
0.0006
0.0224
0.0024
0.0037
0.0165
0.0014
0.0007
0.0007
0.0005
0.0141
0.0012
0.0002
0.0009
0.0023
0.0043

Michigan
0.0004
0.0004
0.0010
0.0017
0.0004
0.0172
0.0016
0.0037
0.0172
0.0022
0.0004

0.0000
0.0005
0.0209
0.0003
0.0001
0.0007
0.0073
0.0040

Ohio
0.0005
0.0021
0.0032
0.0026
0.0009
0.0087
0.0015
0.0033
0.0121
0.0020
0.0001
0.0004
0.0001
0.0247
0.0013
0.0008

0.0000
0.0082
0.0041

Wisconsin
0.0010
0.0006
0.0020
0.0033
0.0014
0.0104
0.0031
0.0040
0.0160
0.0016
0.0006
0.0005
0.0001
0.0173
0.0033
0.0006
0.0011
0.0022
0.0036

26

Table 10

Midwest diverisfication index

Industry
01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39

FRB CHICAGO Working Paper
June 1991 ,W P -1991-12




1963

1986

Change

0.0035
0.0011
0.0013
0.0012
0.0464
0.0000
0.0064
0.0052
0.0046
0.0047
0.0029
0.0013
0.0013
0.0037
0.0005
0.0026
0.0054
0.0006
0.0031
0.0248
0.0250
0.0311
0.0085
0.0362
0.0110
0.0007
0.0007

0.0059
0.0015
0.0006
0.0008
0.0269
0.0007
0.0064
0.0023
0.0047
0.0029
0.0019
0.0011
0.0023
0.0012
0.0040
0.0006
0.0055
0.0001
0.0010
0.0144
0.0189
0.0300
0.0010
0.0354
0.0060
0.0039
0.0003

0.0024
0.0005
-0.0008
-0.0004
-0.0196
0.0006
-0.0000
-0.0029
0.0000
-0.0018
-0.0010
-0.0001
0.0010
-0.0025
0.0034
-0.0019
0.0001
-0.0005
-0.0021
-0.0104
-0.0060
-0.0011
-0.0075
-0.0007
-0.0050
0.0032
-0.0004

27




Table 10 (cont'd)
Industry

40
41
42
44
45
46
47
60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88
Total

FRB CHICAGO Working Paper
June 1991, WP-1991-12

1963

1986

Change

0.0027
0.0017
0.0033
0.0026
0.0019
0.0004
0.0004
0.0008
0.0002
0.0020
0.0006
0.0000
0.0065
0.0022
0.0001
0.0025
0.0007
0.0006
0.0013
0.0010
0.0007
0.0008
0.0018
0.0003
0.0023
0.0032
0.2748

0.0006
0.0006
0.0053
0.0018
0.0027
0.0009
0.0004
0.0037
0.0008
0.0021
0.0004
0.0005
0.0003
0.0037
0.0000
0.0054
0.0010
0.0004
0.0014
0.0016
0.0023
0.0019
0.0010
0.0003
0.0021
0.0012
0.2228

-0.0021
-0.0011
0.0019
-0.0008
0.0008
0.0004
-0.0000
0.0028
0.0006
0.0001
-0.0003
0.0004
-0.0062
0.0015
-0.0001
0.0029
0.0003
-0.0002
0.0001
0.0006
0.0016
0.0011
-0.0008
-0.0000
-0.0002
-0.0021
-0.0520

28




Appendix A
Titles and Descriptions of Industries
Division A. Agriculture, forestry, and fishing
Major Group 01. Agricultural production-crops
Major Group 02. Agricultural production livestock and animal specialties
Major Group 07. Agricultural services
Major Group 08. Forestry
Major Group 09. Fishing, hunting and trapping
Division B. Mining
Major Group
Major Group
Major Group
Major Group

10.
12.
13.
14.

Metal mining
Coalmining
Oil and gas extraction
Mining and quarrying of nonmetallic minerals, except fuels

Division C. Construction
Major Group 15. Building construction-general contractors and operative builders
Major Group 16. Heavy construction other than building construction-contractors
Major Group 17. Construction-special trade contractors
Division D. Manufacturing
Major Group 20. Food and kindred products
Major Group 21. Tobacco products
Major Group 22. Textile mill products
Major Group 23. Apparel and other textile products made from fabrics
Major Group 24. Lumber and wood products, except furniture
Major Group 25. Furniture and fixtures
Major Group 26. Paper and allied products
Major Group 27. Printing, publishing, and allied industries
Major Group 28. Chemicals and allied products
Major Group 29. Petroleum refining and related industries
Major Group 30. Rubber and miscellaneous plastics products
Major Group 31. Leather and leather products
Major Group 32. Stone, clay, and glass, and concrete products
Major Group 33. Primary metal industries
Major Group 34. Fabricated metal products, except machinery and transportation
equipment
Major Group 35. Industrial and commercial machinery and computer equipment

FRB CHICAGO Working Paper
June 1991, WP-1991-12

29




Major Group 36. Electric and other electronic equipment and components, except
computer equipment
Major Group 37. Transportation equipment
Major Group 38. Measuring, analyzing, and controlling instruments; photographic,
medical and optical goods; watches and clocks
Major Group 39. Miscellaneous manufacturing industries
Division E. Transportation, communications, electric, gas, and sanitary services
Major Group 40. Railroad transportation
Major Group 41. Local and suburban transit and interurban highway passenger
transportation
Major Group 42. Motor freight transportation and warehousing
Major Group 43. United States Postal Service
Major Group 44. Water transportation
Major Group 45. Transportation by air
Major Group 46. Pipe lines, except natural gas
Major Group 47. Transportation services
Major Group 48. Communications
Major Group 49. Electric, gas, and sanitary services
Division F. Wholesale trade
Major Group 50. Wholesale trade-durable goods
Major Group 51. Wholesale trade-nondurable goods
Division G. Retail trade
Major Group 52. Building materials, hardware, garden supply, and mobile home
dealers
Major Group 53. General merchandise stores
Major Group 54. Food stores
Major Group 55. Automotive dealers and gasoline service stations
Major Group 56. Apparel and accessory stores
Major Group 57. Home furniture, furnishings, and equipment stores
Major Group 58. Eating and drinking places
Major Group 59. Miscellaneous retail
Division H. Finance, insurance, and real estate
Major Group 60. Depository institutions
Major Group 61. Nondepostitory institutions
Major Group 62. Security and commodity brokers, dealers, exchanges, and services
Major Group 63. Insurance carriers
FRB CHICAGO Working Paper
June 1991, WP-1991-12

30

Major Group 64. Insurance agents, brokers, and service
Major Group 65. Real estate
Major Group 67. Holding and other investment offices
Division I. Services
Major Group 70.
Major Group 72.
Major Group 73.
Major Group 75.
Major Group 76.
Major Group 78.
Major Group 79.
Major Group 80.
Major Group 81.
Major Group 82.
Major Group 83.
Major Group 84.
Major Group 86.
Major Group 87.
Major Group 88.
Major Group 89.

Hotels, rooming houses, camps, and other lodging places
Personal services
Business services
Auto repair, services, and parking
Miscellaneous repair services
Motion pictures
Amusement and recreation services
Health services
Legal services
Educational services
Social services
Museums, art galleries, and botonical zoological gardens
Membership organizations
Engineering, accoutning, research, management, and related
Private households
Miscellaneous Services

Division J. Public administration
Major Group 91. Executive, legislative, and general government, except finance
Major Group 92. Justice, public order, and safety
Major Group 93. Public finance, taxation, and monetary policy
Major Group 94. Administration of human resource programs
Major Group 95. Administration of environmental quality and housing programs
Major Group 96. Administration of economic programs
Major Group 97. National security and international affairs

FRB CHICAGO Working Paper




Appendix B

Model 1
Interregional model with structural break
In EMWt - In EM W ^ = a + 0! (lnEUSt - biEUS^)
+ p2 D74(lnEUSt - biEUS^) + e
In
EMW
EUS
D74
t
a
Pi
h

P1+P2

FRB CHICAGO Working Paper
June 1991, WP-1991-12




log valves
sector employment in Midwest
sector employment in U.S.
1 if year > 1974
0 if year < 1974
time period
intercept
relationship 1956-1973
coefficient on dummy variable
relationship 1974-1989

32

Model 2

Interregional model with expansion and contraction
A. Without structural break
In EMWt - lnEMWt j = a + p t (lnEUSt - lnEUSt j
(+)
+ P2 (lnEUSt -lnEUSt. 1) +
(-)
B. With structural break
In EMWt - lnEMWt

+ Pt (lnEUSt - lnEUS^t
(+)
+ P2 D74(lnEUSt - lnEUSt t) + p 3 (lnEUSt - lnEUSt.])
(+)
(-)
+ p4 D74(lnEUSt - lnEUSt ]) + e
(-)
x= a

where: EMW =
EUS =
In =
D74 =
t
+

FRB CHICAGO Working Paper
June 1991, WP-1991-12




sector employment in Midwest
sector employment in U.S.
log values
1 if year >1974
0 if year < 1974
= time period
= lnEUSt > lnEUSj.j (expansion)
= lnEUSt < lnEUSt_i (contraction)

A

a = intercept
P ] = relationship in expansion
p2 = relationship in contraction

B

a

-

pj
p2
P3
p4

=
=
=
=

intercept
expansion 1956-1973
expansion 1974-1989
contraction 1956-1973
contraction 1974-1989

Model 3

Trend and cycle model
InE

= a + (5T + y (InGNP - InGNP*) + e

InE

= log of sector (or industry) employment

T
InGNP

= time trend
= log of Gross National Product

InGNP* = log of potential GNP
a

= intercept
= time
= GNPGap

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Model 4

Trend and cycle model with structural break
04 + cx2 D74 + (|31 + (52 D74)T

InE

+(Yi + y2 D74) (InGNP - InGNP*) + e

FRB CHICAGO Working Paper
June 1991, WP-1991-12




InE

=

log of sector (or industry) employment (or output)

T

=

time trend

InGNP

=

log of gross national product

InGNP* =

log of potential GNP

D74

=

1 if year > 1974
0 if year < 1974

«1

=

intercept 1956-1973

«2

=

intercept 1974-1989

Pi

=

time 1956-1973

P2

=

time 1974-1989

Y

=

GNPGap 1956-1973

Y

—

GNPGap 1974-1989

Diversification index

This is an annual income based diversification index. There are three
subscripts, representing, location, industry and time:
Zj | 0NCril/INCrTt) - ((INCu s it-INCrit) / (INCUSTt-INCrXt)) |

Where INC
r
US
i
T
t

=
=
=
=
=

Income
region
United States
2 digit SIC industry
total nonagricultural sector
year

The region is subtracted from the United States numbers so as not to
bias the index towards large regions.
This index relates each industry's share of income to the national
average. Having a share 1% below the industry’s national average
has an equivalent effect on the index as a share 1% above the
national average. So if many of a region's industries are highly
specialized or non specialized, then the index will be large. If most
of a region's industries have a share of income close to the national
average, then the index will be small. The possible range of the
index is zero to two.
Location quotient
The location quotient is an annual measure of the concentration of a
region's income relative to the United States. The three subscripts
identify region, industry and time.
INCrit/INCrTt) / (INCUSit/INCUSTt)
Where INC
r
US
i
T
t

=
=
=
=
=

Income
region
United States
industry
total nonagricultural sector
year

If an industry's share of income is equivalent to the national share
then the location quotient is equal to one. If an industry is
concentrated in a region, its share of income in the region is larger

FRB CHICAGO Working Paper
June 1991, WP-1991-12




36

than the industry’s share of national income, then the location
quotient is greater than one. If the industry is not concentrated in the
region, then the location quotient is between zero and one.
Index of structural change
The structural change index is a cumulative measure of change based
on 2 digit SIC income. The index is region specific and has two
subscripts, the industry and year.
I i | (INCit/INCXt) - (INCi69/INCx69) |

Where INC
i
T
t
69

=
=
=
=
=

Income for the region
2 digit SIC industry
total nonagricultural sector
year
base year

This index compares an industry's share of total income to its share at
the beginning of the period (1969). The larger the absolute change in
the share of income, the larger will be the industry's effect on the
index. Both increases and decreases in the share increase the index.

FRB CHICAGO Working Paper
June 1991, WP-1991-12




37

Appendix C

Location quotients, 1963
Share of
total
Industry

u.s.

Midwest

Total
01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39
40
41
42
44
45

1.000
0.032
0.004
0.002
0.005
0.047
0.002
0.020
0.004
0.004
0.006
0.006
0.003
0.008
0.013
0.012
0.010
0.005
0.002
0.008
0.022
0.017
0.021
0.012
0.012
0.017
0.004
0.004
0.014
0.006
0.014
0.003
0.004

1.00
1.09
0.79
0.37
0.80
0.22
1.01
1.25
0.04
0.19
0.43
0.59
1.32
1.14
1.22
0.96
0.80
1.88
0.81
1.29
1.87
2.12
2.14
1.56
3.27
0.50
0.87
1.13
1.15
0.77
1.19
0.33
0.59

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Illinois

Indiana

Iowa

1.00
0.89
0.69
0.02
1.37
0.52
1.11
1.52
0.02
0.15
0.56
0.35
1.26
0.81
1.85
1.04
0.99
0.97
0.99
1.04
1.16
1.80
2.03
1.68
0.37
0.30
1.56
1.49
1.43
0.90
1.18
0.28
1.22

1.00
1.34
0.66
0.14
1.04
0.12
1.24
1.46
0.06
0.05
0.38
1.24
2.16
0.75
0.88
1.26
1.78
1.97
0.34
1.44
3.66
1.61
1.48
2.64
1.98
1.18
0.91
0.95
1.28
0.93
1.30
0.05
0.27

1.00
4.76
2.10
0.17
0.00
1.64
1.86
0.06
0.21
0.55
0.63
0.35
0.88
0.63
0.08
1.61
0.10
1.01
0.52
0.54
1.98
1.23
0.09
0.13
0.31
0.90
1.43
0.52
1.38
0.15

Michigan
1.00
0.55
0.57
1.58
0.14
0.84
0.77
0.05
0.12
0.47
0.60
1.50
1.04
0.67
1.02
0.40
1.18
0.36
0.93
1.69
2.98
2.30
0.56
0.11
0.21
0.45
0.94
0.70
0.48
0.95
0.23
0.39

Ohio

Wisconsin

1.00
0.55
0.76
0.02
1.13
0.12
0.83
0.92
0.06
0.30
0.36
0.33
1.17
1.10
1.22
0.95
0.89
3.98
0.64
2.15
2.75
2.64
2.19
1.72
1.88
0.88
0.61
0.92
1.20
0.76
1.26
0.74
0.42

1.00
1.64
0.98
0.23
0.00
0.86
1.71
0.01
0.46
0.28
1.26
0.91
3.57
1.10
0.48
0.11
0.76
2.82
0.57
0.74
1.44
2.95
1.88
2.52
0.17
0.63
1.32
0.83
0.95
1.31
0.22
0.20

38




Appendix C (cont'd)

Share of
total
Industry

u.s.

Midwest

Illinois

Indiana

46
47
60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88

0.001
0.002
0.014
0.002
0.004
0.009
0.006
0.092
0.007
0.011
0.016
0.005
0.003
0.002
0.005
0.027
0.010
0.006
0.009
0.009
0.008

0.72
0.83
0.96
0.91
0.59
0.94
1.00
1.06
0.75
1.01
0.88
0.90
0.82
0.48
0.83
0.98
0.94
0.75
0.98
0.80
0.68

0.93
1.39
1.19
0.55
0.96
1.20
1.13
1.03
0.91
1.12
1.24
0.85
0.90
0.61
0.85
0.99
1.27
0.91
1.07
0.94
0.62

0.71
0.51
0.70
2.08
0.28
0.89
0.97
0.98
0.63
0.92
0.47
0.88
0.66
0.45
0.64
0.82
0.69
0.77
0.92
0.53
0.66

FRB CHICAGO Working Paper
June 1991, WP-1991-12

Iowa
0.90
0.46
0.96
1.20
0.46
0.98
1.20
1.37
0.75
1.04
0.50
1.13
1.06
0.54
0.63
1.02
0.87
0.83
0.98
0.51
0.77

Michigan
0.34
0.56
0.87
1.27
0.49
0.73
0.79
1.03
0.65
0.93
0.88
0.93
0.79
0.42
0.87
0.95
0.69
0.49
0.92
0.97
0.68

Ohio

Wisconsin

0.91
0.72
0.86
0.62
0.49
0.84
0.93
1.02
0.63
0.97
0.82
0.91
0.75
0.38
0.93
1.01
0.89
0.76
0.99
0.74
0.73

0.23
0.58
0.96
0.29
0.45
0.92
1.11
1.17
0.93
1.01
0.60
0.85
0.89
0.42
0.77
1.11
0.97
0.69
0.83
0.62
0.63

39

Appendix C

Location quotient, 1986
Industry

u.s.

Midwest

Total
01
07
10
12
13
14
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
371
379
38
39
40
41
42
44
45
46
47

1.000
0.023
0.004
0.001
0.004
0.026
0.001
0.017
0.002
0.005
0.005
0.006
0.003
0.008
0.011
0.016
0.007
0.007
0.001
0.006
0.010
0.015
0.041
0.023
0.012
0.013
0.008
0.004
0.005
0.002
0.015
0.002
0.007
0.001
0.003

1.00
1.21
0.70
0.29
0.85
0.14
0.63
1.31
0.00
0.17
0.56
0.73
1.30
1.23
1.09
1.20
0.93
1.64
0.88
1.13
2.24
2.04
1.60
1.04
3.40
0.63
0.60
1.06
1.10
0.72
1.29
0.30
0.68
0.48
0.88

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Illinois

Indiana

Iowa

1.00
0.89
0.67

1.00
1.31
0.60

1.00
5.45
1.39

1.52
0.10
0.66
1.45

1.39
0.03
0.99
1.09
0.01
0.06
0.43
1.47
1.95
0.71
0.92
1.60
0.41
2.41
0.76
1.48
4.70
1.78
1.16
2.04
2.42
1.20
0.96
1.26
1.45
0.77
1.75
0.28
0.34
0.60
0.41

0.05
0.01
1.20
2.28

1.00
0.58
0.58
1.39
0.03
0.29
0.37
0.89

0.15
0.36
0.91
0.85
0.54
1.01
1.12
0.20
1.44
0.36
0.77
0.62
1.02
2.28
0.99
0.53
0.04
0.40
1.23
1.47
0.57
1.33
0.12
0.16
0.46
0.39

0.09
1.24
0.46
2.51
0.75
0.61
0.90
0.52
1.27
0.63
0.91
1.87
2.63
1.53
0.47
10.5
0.40
0.42
0.51
0.65
0.40
1.03
0.18
0.53
0.39
0.77

0.17
0.33
0.30
0.75
0.76
1.56
1.34
0.88
1.25
0.62
0.68
1.36
1.61
1.35
1.02
0.49
0.39
0.72
1.26
1.35
1.00
1.28
0.34
1.46
0.62
1.58

Michigan

Ohio

Wisconsin

1.00
0.59
0.62

1.00
2.12
0.92
0.06

1.08
0.22
0.49
1.11
0.01
0.20
0.43
0.61
0.77
1.01
1.03
1.42
2.12
2.21
0.79
1.87
3.34
2.54
1.56
1.06
2.66
1.20
0.54
1.03
1.07
0.38
1.34
0.47
0.40
0.45
0.65

0.01
0.65
1.86
0.35
0.34
1.75
1.15
4.81
1.10
0.54
0.14
1.40
2.70
0.94
1.07
1.82
2.55
1.07
1.60
0.12
0.53
1.29
0.77
1.41
1.21
0.18
0.24
0.26
0.56

40

Appendix C (cont'd)

Industry

U.S.

Midwest

Illinois

Indiana

60
61
62
63
64
65
70
72
73
75
76
78
79
80
81
82
83
84
88

0.017
0.002
0.008
0.010
0.006
0.107
0.006
0.007
0.035
0.008
0.003
0.002
0.005
0.045
0.010
0.006
0.009
0.015
0.002

0.82
1.30
0.77
1.03
0.94
1.00
0.52
1.00
0.88
0.90
0.87
0.37
0.73
1.04
0.84
0.85
1.02
0.88
0.60

0.73
1.98
1.54
1.23
1.17
1.00
0.65
1.03
1.27
0.94
0.93
0.66
0.78
0.97
1.22
1.14
1.14
0.98
0.62

0.98
1.06
0.29
0.93
0.82
0.88
0.49
1.08
0.52
1.03
1.00
0.23
0.59
1.03
0.58
0.79
0.92
0.52
0.57

FRB CHICAGO Working Paper
June 1991, WP-1991-12




Iowa
1.64
1.46
0.38
1.16
1.15
0.97
0.44
1.05
0.69
0.93
0.83
0.20
0.47
0.93
0.74
0.85
0.90
0.47
0.71

Michigan
0.76
0.71
0.39
0.80
0.76
1.05
0.45
0.89
0.87
0.89
0.97
0.45
0.70
1.04
0.72
0.50
1.01
1.09
0.54

Ohio

Wisconsin

0.69
1.44
0.66
0.97
0.82
0.96
0.44
1.00
0.70
0.86
0.73
0.19
0.83
1.16
0.75
0.88
1.01
1.01
0.65

0.86
0.47
0.49
1.11
0.92
1.11
0.51
0.96
0.72
0.76
0.69
0.15
0.73
1.05
0.63
0.78
0.96
0.53
0.55

41