United States. Bureau of Economic Analysis. "May 1997," Survey of Current Business (May 1997). https://fraser.stlouisfed.org/title/46/item/9926, accessed on May 9, 2024.
United States. Bureau of Economic Analysis. "May 1997," Survey of Current Business (May 1997). https://fraser.stlouisfed.org/title/46/item/9926, accessed on May 9, 2024.