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-. "Real Gross Private Domestic Investment," 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-. "September 2008," Economic Indicators (September 2008) : 11-11. https://fraser.stlouisfed.org/title/1/item/605/toc/187261 , accessed on May 24, 2024.