Year	Percent of total labor force
1993	12.7
1994	14.6
1995	13.7
1996	12.6
1997	11.882
1998	12.725
1999	16.492
2000	18.9
2001	19.458
2002	18.825
2003	17.7
2004	18.358
2005	16.358
2006	13.442
2007	11.217
2008	9.592
2009	12.092
2010	14.458
2011	13.7
2012	13.983
2013	14.217
2014	13.192
2015	11.492
2016	9.675
2017	8.125
2018	6.592
2019	6.1
2020	6.049
2021	6
2022	5.9
2023	5.9
2024	5.9