Council of Economic Advisers (U.S.) , United States. Congress. Joint Committee on the Economic Report, 1946-1956 and United States. Congress. Joint Economic Committee, 1956-. "Implicit Price Deflators for Gross National Product," in Council of Economic Advisers (U.S.) , United States. Congress. Joint Committee on the Economic Report, 1946-1956 and United States. Congress. Joint Economic Committee, 1956-. "December 1990," Economic Indicators (December 1990) : 4-4. https://fraser.stlouisfed.org/title/1/item/709/toc/258916 , accessed on April 17, 2024.