United States. Bureau of Economic Analysis. "May 2008," Survey of Current Business (May 2008). https://fraser.stlouisfed.org/title/46/item/10191, accessed on April 23, 2024.
United States. Bureau of Economic Analysis. "May 2008," Survey of Current Business (May 2008). https://fraser.stlouisfed.org/title/46/item/10191, accessed on April 23, 2024.