Year	% of male labor force (national estimate)
1970	6.5
1971	7
1972	6.8
1973	5.8
1974	5.6
1976	6.418
1977	7.359
1978	7.637
1979	6.77
1980	7.01
1981	7.164
1982	11.248
1983	12.343
1984	11.37
1985	10.453
1986	9.47
1987	8.528
1988	7.429
1989	7.373
1990	8.163
1991	10.823
1992	12.013
1993	11.949
1994	10.886
1995	9.798
1996	9.894
1997	9.252
1998	8.523
1999	7.828
2000	6.943
2001	7.528
2002	8.13
2003	7.936
2004	7.476
2005	7.015
2006	6.731
2007	6.48
2008	6.739
2009	9.616
2010	8.915
2011	8.051
2012	7.788
2013	7.556
2014	7.487
2015	7.513
2016	7.718
2017	6.872
2018	6.113
2019	6.072
2020	9.778
2021	7.695
2022	5.408
2023	5.556