Year	% of total labor force (national estimate)
1994	17.33
1995	17.54
1996	16.4
1997	14.13
1998	13.711
1999	13.388
2000	15.931
2001	16.84
2002	13.008
2003	12.875
2004	10.684
2005	8.325
2006	5.78
2007	4.25
2008	5.826
2009	13.785
2010	17.814
2011	15.39
2012	13.365
2013	11.77
2014	10.698
2015	9.12
2016	7.862
2017	7.073
2018	6.147
2019	6.255
2020	8.487
2021	7.112
2022	5.956
2023	6.841