Year	% of total labor force (national estimate)
2000	10.625
2001	21.493
2002	27.465
2003	23.004
2004	23.215
2005	20.016
2006	19.014
2007	18.282
2008	22.913
2009	20.452
2010	21.416
2011	17.597
2012	19.202
2013	19.894
2014	20.527
2015	23.005
2016	23.939
2017	25.677
2018	26.256
2019	25.34
2020	25.895
2021	26.39
2022	24.42