Year	% of male labor force (national estimate)
1976	1.93
1977	2.12
1978	2.15
1979	2.75
1981	3.9
1982	4.7
1983	4.62
1984	3.9
1985	3.17
1986	2.22
1987	3.34
1988	3.54
1989	3.474
1990	4.212
1992	5.859
1993	5.16
1995	5.855
1996	6.349
1997	7.026
1998	7.855
1999	8.757
2001	8.437
2002	8.415
2003	8.89
2004	7.629
2005	7.945
2006	7.339
2007	6.835
2008	6.008
2009	6.918
2011	5.446
2012	5.795
2013	5.674
2014	5.603
2015	7.218
2016	10.061
2017	11.191
2018	10.721
2019	10.051
2020	11.784
2021	10.656
2022	7.463
2023	6.597