United States. Bureau of Economic Analysis. "Personal Income and Outlays: December 2016 : Historical Comparisons, BEA 17-04," Bureau of Economic Analysis (BEA) News Releases (January 30, 2017). https://fraser.stlouisfed.org/title/6148/item/602475/content/pdf/bea_newsreleases_20170130_historical-comparison, accessed on March 21, 2025.