Year	Percent of total labor force (Units)
1981	22.328
1982	22.219
1983	21.426
1984	20.660
1985	19.923
1986	19.211
1987	18.525
1988	17.863
1989	17.225
1990	16.610
1991	15.998
1992	15.409
1993	15.757
1994	15.177
1995	14.618
1996	14.000
1997	13.500
1998	13.000
1999	12.500
2000	15.200
2001	15.000
2002	15.900
2003	15.800
2004	16.183
2005	17.010
2006	17.493
2007	16.770
2008	16.040
2009	14.894
2010	13.733
2011	12.033
2012	14.800
2013	15.200
2014	19.800
2015	21.600
2016	20.600
2017	19.600
2018	19.500
2019	22.100
2020	26.830
2021	28.328
2022	32.137
2023	45.961
2024	49.543
2025	48.166
2026	45.741
2027	43.414
2028	42.090
2029	41.018