Year	Percent of total labor force (Units)
1981	10.760
1982	13.650
1983	14.945
1984	17.037
1985	18.631
1986	17.735
1987	17.934
1988	17.137
1989	15.244
1990	14.945
1991	17.236
1992	22.915
1993	24.410
1994	21.750
1995	19.625
1996	15.750
1997	14.550
1998	12.150
1999	10.350
2000	9.350
2001	9.850
2002	10.300
2003	11.000
2004	9.575
2005	9.075
2006	8.725
2007	7.425
2008	8.125
2009	9.975
2010	10.250
2011	11.150
2012	11.500
2013	11.625
2014	12.275
2015	11.300
2016	9.650
2017	9.950
2018	10.050
2019	10.088
2020	15.724
2021	14.100
2022	8.467
2023	8.438
2024	8.228
2025	8.202
2026	8.036
2027	8.065
2028	8.095
2029	8.024