Year	Percent of total labor force
1980	13.448
1981	11.8
1982	12.4
1983	11
1984	12
1985	12.5
1986	13.1
1987	14
1988	14.2
1989	15
1990	15.5
1991	14.9
1992	14.4
1993	15
1994	12.454
1995	16.9
1996	14.9
1997	13.3
1998	13.2
1999	10.9
2000	9.8
2001	6.4
2002	12.2
2003	8
2004	6.7
2005	5.6
2006	5.3
2007	5
2008	6.2
2009	6.963
2010	8
2011	7.475
2012	6.786
2013	5.28
2014	5.626
2015	5.957
2016	6.197
2017	6.406
2018	15.168
2019	23.408
2020	22.229
2021	18.062
2022	14.995
2023	13.862
2024	12.462