Board of Governors of the Federal Reserve System (U.S.), 1935-. "Insurance and Pension Fund Reserves, Unadjusted Net Flows," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 20, 1980," Z.1 Financial Accounts of the United States (1980-08-20) : 35-35. https://fraser.stlouisfed.org/title/93/item/69063/toc/480353 , accessed on March 29, 2024.