Year	Percent of total labor force
1983	14.5
1984	14
1985	13.1
1986	10.1
1987	9.1
1988	8.6
1989	8
1990	8.5
1991	8.9
1992	9
1993	8.3
1994	9.2
1995	10.3
1996	11.9
1997	11.558
1998	10.125
1999	11.2
2000	13.4
2001	15.192
2002	16.758
2003	17.158
2004	13.35
2005	12.15
2006	10.783
2007	9.392
2008	7.917
2009	7.792
2010	7.033
2011	6.342
2012	6.317
2013	6.5
2014	6.608
2015	7.525
2016	7.867
2017	7.925
2018	8.049
2019	8.114
2020	7.885
2021	7.547
2022	7.508
2023	7.379
2024	7.449