Year	Percent of total labor force (Units)
1980	5.200
1981	4.500
1982	4.133
1983	4.117
1984	3.850
1985	4.025
1986	3.842
1987	3.108
1988	2.525
1989	2.583
1990	2.458
1991	2.450
1992	2.525
1993	2.900
1994	2.475
1995	2.067
1996	2.058
1997	2.617
1998	6.950
1999	6.583
2000	4.425
2001	4.000
2002	3.258
2003	3.550
2004	3.658
2005	3.750
2006	3.475
2007	3.258
2008	3.175
2009	3.633
2010	3.708
2011	3.408
2012	3.225
2013	3.100
2014	3.492
2015	3.592
2016	3.675
2017	3.683
2018	3.833
2019	3.783
2020	3.942
2021	3.675
2022	2.883
2023	2.700
2024	3.000
2025	3.100
2026	3.100
2027	3.100
2028	3.100
2029	3.100