United States. President and Council of Economic Advisers (U.S.). "Gross National Product: Receipts and Expenditures by Major Economic Groups," in United States. President and Council of Economic Advisers (U.S.). "1959," Economic Report of the President (1959) : 160-161. https://fraser.stlouisfed.org/title/45/item/8130/toc/392604 , accessed on March 29, 2024.