Year	Percent of total labor force
1980	6.349
1981	7.438
1982	8.069
1983	7.383
1984	8.458
1985	8.7
1986	8.875
1987	9.15
1988	8.842
1989	8.7
1990	8.4
1991	8.617
1992	9.442
1993	10.267
1994	10.667
1995	10.508
1996	10.833
1997	10.892
1998	10.692
1999	10.442
2000	9.175
2001	8.458
2002	8.275
2003	8.508
2004	8.825
2005	8.892
2006	8.825
2007	7.983
2008	7.458
2009	9.083
2010	9.267
2011	9.208
2012	9.792
2013	10.308
2014	10.3
2015	10.375
2016	10.05
2017	9.433
2018	9.108
2019	8.823
2020	8.397
2021	8.099
2022	7.861
2023	7.623
2024	7.386