Board of Governors of the Federal Reserve System (U.S.), 1935-. "Insurance and Pension Fund Reserves, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 31, 1983 : Annual Revisions," Z.1 Financial Accounts of the United States (1983-08-31) : 39-39. https://fraser.stlouisfed.org/title/93/item/69073/toc/481677 , accessed on May 10, 2024.