Year	Percent of total labor force
1995	4
1996	3.9
1997	4.775
1998	6.491
1999	8.72
2000	8.757
2001	8.113
2002	7.27
2003	7.77
2004	8.344
2005	7.932
2006	7.131
2007	5.307
2008	4.377
2009	6.699
2010	7.282
2011	6.707
2012	6.976
2013	6.951
2014	6.111
2015	5.02
2016	3.946
2017	2.89
2018	2.5
2019	3.1
2020	3.2
2021	3.4
2022	3.5
2023	3.5
2024	3.5