Workers participating in NLRB elections as a share of nonagricultural employment, 1951–2009
| FY Year | Workers eligible in all elections | Workers eligible in elections won by union |
|---|---|---|
| 1951 | 1.59% | 1.21% |
| 1952 | 1.81% | 1.37% |
| 1953 | 1.72% | 1.36% |
| 1954 | 1.21% | 0.81% |
| 1955 | 1.11% | 0.81% |
| 1956 | 1.02% | 0.64% |
| 1957 | 1.00% | 0.58% |
| 1958 | 0.77% | 0.43% |
| 1959 | 0.89% | 0.53% |
| 1960 | 1.02% | 0.60% |
| 1961 | 0.96% | 0.49% |
| 1962 | 1.11% | 0.63% |
| 1963 | 0.89% | 0.53% |
| 1964 | 1.06% | 0.57% |
| 1965 | 1.02% | 0.63% |
| 1966 | 1.06% | 0.60% |
| 1967 | 1.10% | 0.63% |
| 1968 | 0.94% | 0.48% |
| 1969 | 0.98% | 0.49% |
| 1970 | 1.01% | 0.53% |
| 1971 | 0.95% | 0.45% |
| 1972 | 0.94% | 0.47% |
| 1973 | 0.82% | 0.35% |
| 1974 | 0.80% | 0.29% |
| 1975 | 0.87% | 0.33% |
| 1976 | 0.68% | 0.24% |
| 1977 | 0.78% | 0.30% |
| 1978 | 0.60% | 0.22% |
| 1979 | 0.73% | 0.26% |
| 1980 | 0.65% | 0.24% |
| 1981 | 0.54% | 0.19% |
| 1982 | 0.33% | 0.11% |
| 1983 | 0.22% | 0.10% |
| 1984 | 0.26% | 0.12% |
| 1985 | 0.26% | 0.10% |
| 1986 | 0.26% | 0.09% |
| 1987 | 0.24% | 0.10% |
| 1988 | 0.24% | 0.10% |
| 1989 | 0.28% | 0.11% |
| 1990 | 0.26% | 0.09% |
| 1991 | 0.22% | 0.08% |
| 1992 | 0.21% | 0.08% |
| 1993 | 0.23% | 0.10% |
| 1994 | 0.20% | 0.08% |
| 1995 | 0.20% | 0.08% |
| 1996 | 0.20% | 0.07% |
| 1997 | 0.22% | 0.09% |
| 1998 | 0.23% | 0.09% |
| 1999 | 0.22% | 0.10% |
| 2000 | 0.22% | 0.10% |
| 2001 | 0.19% | 0.08% |
| 2002 | 0.16% | 0.07% |
| 2003 | 0.16% | 0.07% |
| 2004 | 0.15% | 0.07% |
| 2005 | 0.14% | 0.06% |
| 2006 | 0.11% | 0.06% |
| 2007 | 0.09% | 0.05% |
| 2008 | 0.10% | 0.06% |
| 2009 | 0.07% | 0.05% |
Source: Authors' analysis of National Labor Relations Board annual reports, Bureau of Labor Statistics.