Board of Governors of the Federal Reserve System (U.S.), 1935-. "U.S. Government, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 6, 1991," Z.1 Financial Accounts of the United States (1991-03-06) : 25-25. https://fraser.stlouisfed.org/title/93/item/69042/toc/477195 , accessed on March 29, 2024.