United States. Bureau of Economic Analysis. "State Annual Personal Income, 2018 (Preliminary) and State Quarterly Personal Income, 4th Quarter 2018 : Highlights: State Personal Income 2018, BEA 19-09," Bureau of Economic Analysis (BEA) News Releases (March 26, 2019). https://fraser.stlouisfed.org/title/6148/item/602782/content/pdf/bea_newsreleases_20190326_highlights, accessed on March 21, 2025.