Year	% of total labor force (national estimate)
1991	8.402208671256515
1992	8.998374443351661
1993	10.626696306817122
1994	11.77632064122366
1995	11.40801286549551
1996	11.664962291982087
1997	11.665540761352043
1998	11.245434319353006
1999	10.494075300182283
2000	9.50761027052169
2001	8.447149443300027
2002	8.701523482677786
2003	9.03344809324877
2004	9.297562045541195
2005	9.16232959599453
2006	8.440709482339804
2007	7.547890976191746
2008	7.552155169989474
2009	9.638264004757604
2010	10.180169175207137
2011	10.26395407304222
2012	11.421082462793196
2013	12.001301161162269
2014	11.632636460148344
2015	10.892524356467778
2016	10.030615828542008
2017	9.06755468331473
2018	8.162795218497745
2019	7.518102669484872
2020	7.83393828723557
2021	7.726904265562849
2022	6.746344163621462
2023	6.545517933515321