United States. Bureau of Economic Analysis. "Gross Domestic Product: Fourth Quarter 1999 (Final), Revised Estimates, 1929-99 | Corporate Profits: Fourth Quarter 1999 | Fixed Assets and Consumer Durable Goods: 1972-98, BEA 00-07," Bureau of Economic Analysis (BEA) News Releases (March 30, 2000). https://fraser.stlouisfed.org/title/6148/item/597725, accessed on March 25, 2025.