The AFQT was administered in 1980, near the beginning of the NLSY panel; marital status is measured across all waves of the survey, through 2018.
— Nicholas H Wolfinger (@NickWolfinger) January 18, 2021
This is of course the famous National Longitudinal Survey of Youth 1979 database featured in The Bell Curve. The Department of Labor recruited a nationally representative sample of 14 to 23-year-olds to track over their lifetimes. Then in 1980, the Pentagon, having admitted their scoring norms for the AFQT military entrance test were inflated, paid the DoL to give the military test to the panel. In 1990, one of the branches of the military gave all the data to Herrnstein and Murray who made it the core of their 1994 book.