Year	Percent of total labor force (Units)
1985	6.893
1986	8.261
1987	8.207
1988	8.079
1989	6.715
1990	5.055
1991	4.345
1992	3.718
1993	3.026
1994	2.947
1995	3.143
1996	2.516
1997	2.445
1998	3.225
1999	3.425
2000	3.100
2001	3.675
2002	3.475
2003	3.600
2004	3.550
2005	3.550
2006	3.325
2007	3.225
2008	3.325
2009	3.675
2010	3.300
2011	3.050
2012	3.025
2013	3.100
2014	2.875
2015	3.150
2016	3.450
2017	3.425
2018	3.325
2019	3.275
2020	4.525
2021	4.650
2022	3.825
2023	3.625
2024	3.525
2025	3.525
2026	3.525
2027	3.525
2028	3.525
2029	3.525