United States. Bureau of Labor Statistics. "Number of Jobs, Labor Market Experience, and Earnings Growth: Results from a National Longitudinal Survey, USDL-19-1520," Number of Jobs, Labor Market Experience, Marital Status, and Health for Those Born 1957–1964 (August 22, 2019). https://fraser.stlouisfed.org/title/9650/item/707290, accessed on January 17, 2026.