United States. Bureau of Economic Analysis. "Personal Income and Outlays: December 2009 : Tables, BEA 10-03," Bureau of Economic Analysis (BEA) News Releases (February 1, 2010). https://fraser.stlouisfed.org/title/6148/item/601135/content/xls/bea_newsreleases_20100201_tables-only--excel, accessed on March 21, 2025.