Year	Percent of total labor force
1990	8.044
1991	8.791
1992	8.952
1993	10.911
1994	11.143
1995	11.176
1996	9.467
1997	8.671
1998	7.955
1999	7.692
2000	8.995
2001	8.808
2002	10.05
2003	11.275
2004	10.526
2005	11.468
2006	10.917
2007	9.205
2008	8.676
2009	9.367
2010	9.21
2011	10.379
2012	12.373
2013	12.992
2014	13.365
2015	12.859
2016	12.705
2017	12.245
2018	10.932
2019	9.594
2020	8.252
2021	7.631
2022	6.999
2023	6.375
2024	5.714