Year	Percent of total labor force
1980	5.921
1981	8.766
1982	9.405
1983	9.231
1984	5.361
1985	6.846
1986	6.229
1987	5.577
1988	5.461
1989	3.774
1990	4.642
1991	5.5
1992	4.1
1993	4.1
1994	4.2
1995	5.2
1996	6.2
1997	5.7
1998	5.6
1999	6.022
2000	5.193
2001	6.072
2002	6.403
2003	6.668
2004	6.495
2005	6.63
2006	5.962
2007	4.597
2008	4.948
2009	7.822
2010	9.213
2011	10.492
2012	9.849
2013	8.311
2014	9.658
2015	9.604
2016	9.541
2017	9.293
2018	10.2
2019	9.659
2020	9.6
2021	9.6
2022	9.5
2023	9.3
2024	9.3