Decade: 1947-1956 Major work stoppages: 3,438 |
Decade: 1957-1966 Major work stoppages: 2,500 |
Decade: 1967-1976 Major work stoppages: 3,321 |
Decade: 1977-1986 Major work stoppages: 1,446 |
Decade: 1987-1996 Major work stoppages: 404 |
Decade: 1997-2006 Major work stoppages: 240 |
Decade: 2007-2016 Major work stoppages: 143 |