Year	Percent of total labor force (Units)
1980	0.313
1981	0.365
1982	0.670
1983	1.022
1984	1.254
1985	0.906
1986	0.656
1987	0.441
1988	0.636
1989	1.658
1990	2.594
1991	2.925
1992	4.665
1993	5.764
1994	5.776
1995	5.250
1996	4.153
1997	4.204
1998	3.314
1999	2.489
2000	2.633
2001	2.791
2002	3.515
2003	3.525
2004	3.417
2005	2.883
2006	3.200
2007	2.492
2008	3.325
2009	8.008
2010	8.317
2011	7.700
2012	6.617
2013	5.833
2014	5.417
2015	4.500
2016	3.342
2017	3.283
2018	3.100
2019	3.925
2020	6.433
2021	6.017
2022	3.750
2023	3.383
2024	3.838
2025	4.089
2026	4.101
2027	4.065
2028	4.021
2029	4.000