Year	% of male labor force (national estimate)
1969	3.77
1970	2.57
1971	2.83
1972	3.11
1973	2.52
1974	1.48
1975	2.27
1976	4.42
1977	7.08
1978	8.21
1979	6.6
1980	4.77
1981	5.23
1982	5.38
1983	5.54
1984	5.25
1985	5.5
1986	5.98
1987	5.71
1988	4.93
1989	3.15
1990	3.483
1991	7.817
1992	13.333
1993	17.784
1994	17.803
1995	17.784
1996	15.587
1997	14.78
1998	12.882
1999	11.002
2000	10.35
2001	9.86
2002	10.656
2003	10.958
2004	10.156
2005	9.556
2006	8.749
2007	6.538
2008	6.071
2009	8.888
2010	9.094
2011	8.405
2012	8.28
2013	8.823
2014	9.327
2015	9.877
2016	9.037
2017	8.872
2018	7.419
2019	7.176
2020	8.011
2021	8.138
2022	7.048
2023	7.847