Board of Governors of the Federal Reserve System (U.S.), 1935-. "Growth of Major Debt Aggregates by Sector, Year-end Outstanding (billions)," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 30, 1988 : Annual Revisions," Z.1 Financial Accounts of the United States (1988-09-30) : 11-11. https://fraser.stlouisfed.org/title/93/item/69039/toc/484255 , accessed on April 24, 2024.