Year	Percent of total labor force (Units)
1980	4.019
1981	3.911
1982	4.358
1983	6.241
1984	7.186
1985	3.922
1986	4.200
1987	4.225
1988	5.800
1989	7.325
1990	7.975
1991	10.625
1992	10.675
1993	9.800
1994	8.350
1995	6.450
1996	6.325
1997	6.875
1998	7.725
1999	7.050
2000	6.150
2001	5.475
2002	5.300
2003	4.750
2004	4.025
2005	3.800
2006	3.875
2007	3.625
2008	4.025
2009	5.900
2010	6.200
2011	6.050
2012	6.450
2013	5.825
2014	5.425
2015	5.400
2016	5.175
2017	4.750
2018	4.325
2019	4.125
2020	4.600
2021	3.775
2022	3.300
2023	3.725
2024	5.036
2025	5.418
2026	5.232
2027	4.975
2028	4.707
2029	4.489