Year	Percent of total labor force
1980	7.2
1981	7.2
1982	7.6
1983	7.51
1984	7.407
1985	6.946
1986	7.716
1987	8.131
1988	8.701
1989	8.575
1990	7.998
1991	7.66
1992	7.944
1993	8.368
1994	8.013
1995	7.109
1996	6.124
1997	6.318
1998	6.373
1999	7.155
2000	5.997
2001	7.804
2002	9.764
2003	9.925
2004	9.688
2005	9.488
2006	9.034
2007	9.183
2008	10.02
2009	13.053
2010	11.127
2011	9.096
2012	8.432
2013	9.041
2014	9.915
2015	10.279
2016	10.907
2017	10.904
2018	10.955
2019	12.703
2020	11.419
2021	10.72
2022	10.72
2023	10.72
2024	10.5