Year	Percent of total labor force
1980	8.3
1981	10
1982	11.5
1983	10.742
1984	10.825
1985	10.117
1986	10.05
1987	9.808
1988	8.833
1989	7.367
1990	6.558
1991	6.45
1992	7.092
1993	8.625
1994	9.75
1995	9.683
1996	9.55
1997	9.217
1998	9.342
1999	8.425
2000	6.858
2001	6.567
2002	7.525
2003	8.175
2004	8.383
2005	8.475
2006	8.267
2007	7.492
2008	6.967
2009	7.908
2010	8.317
2011	7.142
2012	7.55
2013	8.442
2014	8.533
2015	8.5
2016	7.842
2017	7.108
2018	5.917
2019	5.9
2020	5.9
2021	5.9
2022	5.9
2023	5.9
2024	5.9