Year	Percent of total labor force
1983	3.85
1984	3.75
1985	3.65
1986	3.3
1987	3.071
1988	3.142
1989	3.141
1990	3.13
1991	5.85
1992	5.85
1993	4.73
1994	4.84
1995	5.37
1996	5.37
1997	6.12
1998	5.89
1999	5.89
2000	7.82
2001	7.82
2002	8.27
2003	8.27
2004	7.69
2005	7.69
2006	6.2
2007	5.2
2008	5.2
2009	5.46
2010	5.55
2011	5.95
2012	5.95
2013	5.975
2014	6
2015	5.9
2016	5.958
2017	6.018
2018	6.079
2019	6.14
2020	6.202
2021	6.265
2022	6.328
2023	6.392
2024	6.457