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.). "1979," Economic Report of the President (1979) : 198-199. https://fraser.stlouisfed.org/title/45/item/8150/toc/131735 , accessed on March 19, 2024.