Year	Percent of total labor force (Units)
1996	31.992
1997	36.104
1998	34.481
1999	32.411
2000	31.727
2001	30.515
2002	31.944
2003	36.687
2004	37.150
2005	37.250
2006	36.025
2007	34.925
2008	33.775
2009	32.175
2010	32.050
2011	31.375
2012	31.000
2013	29.000
2014	28.025
2015	26.050
2016	23.750
2017	22.375
2018	20.725
2019	17.250
2020	16.375
2021	15.425
2022	14.375
2023	14.300
2024	14.100
2025	14.000
2026	13.900
2027	13.900
2028	13.900
2029	13.900