Year	% of male labor force (national estimate)
1969	2
1970	1.6
1971	0.9
1972	0.7
1973	0.6
1974	0.8
1975	1.5
1976	1.6
1977	1.4
1978	1.7
1979	1.7
1980	1.6
1981	1.84
1982	2.77
1983	3.49
1984	3.93
1985	3.64
1986	3.15
1987	3.61
1988	3.25
1989	2.84
1990	3.02
1991	3.33
1992	3.46
1993	4.07
1994	3.208
1995	3.931
1996	5.347
1997	5.064
1998	5.421
1999	4.662
2000	4.771
2001	3.917
2002	5.122
2003	5.139
2004	5.786
2005	5.504
2006	5.044
2007	4.55
2008	3.982
2009	5.582
2010	5.06
2011	4.634
2012	4.981
2013	5.403
2014	5.892
2015	6.18
2016	6.477
2017	5.97
2018	5.111
2019	4.68
2020	5.365
2021	6.508
2022	5.164
2023	5.476