Year	% of male labor force (national estimate)
1988	1.41
1991	2.61
1992	2.81
1993	3.031
1994	4.17
1995	6.243
1996	4.656
1997	3.12
1998	3.023
1999	2.046
2000	2.26
2001	2.233
2002	2.568
2003	2.916
2004	3.203
2005	3.359
2006	3.378
2007	3.407
2008	3.778
2009	5.358
2010	5.375
2011	5.201
2012	4.9
2013	4.897
2014	4.796
2015	4.222
2016	3.822
2017	3.309
2018	3.191
2019	3.453
2020	4.663
2021	3.977
2022	3.222
2023	2.743