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-. "December 6, 1989," Z.1 Financial Accounts of the United States (1989-12-06) : 44-44. https://fraser.stlouisfed.org/title/93/item/69138/toc/476492 , accessed on May 7, 2024.