Composition of U.S. workforce by education, 1979 and 2017
| Year | Less than high school | High school | Some college | College | Advanced degree |
|---|---|---|---|---|---|
| 1979 | 23.21% | 36.73% | 21.62% | 12.51% | 5.93% |
| 2017 | 7.22 | 27.17 | 28.45 | 23.74 | 13.41 |
Source: EPI analysis of Current Population Survey Outgoing Rotation Group microdata