Year	Percent of total labor force (Units)
1980	8.375
1981	9.184
1982	10.981
1983	11.573
1984	12.216
1985	14.418
1986	12.504
1987	14.102
1988	18.780
1989	18.939
1990	16.719
1991	15.971
1992	14.674
1993	13.262
1994	14.008
1995	14.019
1996	14.317
1997	13.370
1998	11.599
1999	9.532
2000	13.526
2001	14.026
2002	13.489
2003	13.042
2004	11.749
2005	9.781
2006	8.662
2007	6.372
2008	5.579
2009	6.557
2010	6.516
2011	4.481
2012	4.050
2013	4.098
2014	4.823
2015	5.052
2016	5.494
2017	6.130
2018	5.956
2019	7.070
2020	18.548
2021	11.293
2022	8.800
2023	7.431
2024	8.400
2025	8.000
2026	7.700
2027	7.700
2028	7.700
2029	7.700