Year	% of male labor force (national estimate)
1981	3.28
1982	4.79
1983	5.799
1984	5.982
1985	5.644
1986	5.04
1987	5.096
1988	4.904
1989	4.524
1990	4.186
1991	4.636
1992	5.503
1993	6.592
1994	6.511
1995	6.662
1996	6.319
1997	6.706
1998	7.862
1999	8.005
2000	7.406
2001	7.166
2002	6.761
2003	6.228
2004	6.643
2005	6.234
2006	5.549
2007	5.176
2008	5.095
2009	6.889
2010	10.012
2011	15.186
2012	21.783
2013	24.642
2014	23.727
2015	21.741
2016	19.859
2017	17.73
2018	15.299
2019	13.702
2020	13.192
2021	11.287
2022	9.276
2023	8.463