Measures of rate of decline in private-sector union membership, various periods, 1950–2019
| Time period | Change in union membership rate | Annual percentage point change in union membership rate | Percent decline in (10 yr) union membership rate |
|---|---|---|---|
| 1950–1960 | -2.7 | -0.27 | -7.8% |
| 1960–1970 | -2.8 | -0.28 | -8.8% |
| 1970–1972 | -1.8 | -0.90 | -30.9% |
| 1973–1980 | -4.4 | -0.62 | -25.5% |
| Alt 1970–1980 | -6.8 | -0.68 | -28.9% |
| 1980–1990 | -8.2 | -0.82 | -40.8% |
| 1990–2000 | -2.9 | -0.29 | -24.4% |
| 2000–2007 | -1.5 | -0.21 | -23.8% |
| 2007–2019 | -1.3 | -0.11 | -14.4% |
Source: Hirsch 2008.