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-. "Productivity and Related Data, Business and Nonfarm Business Sectors," 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-. "February 2015," Economic Indicators (February 2015) : 18-18. https://fraser.stlouisfed.org/title/1/item/487469/toc/503379 , accessed on April 24, 2024.