Year	Percent of total labor force
1988	7
1989	7.9
1990	6.1
1991	8.5
1992	8.9
1993	8.3
1994	5.696
1995	5.493
1996	9.046
1997	7.828
1998	10.163
1999	13.107
2000	7.625
2001	9.554
2002	7.828
2003	10.163
2004	7.219
2005	7.095
2006	6.687
2007	6.923
2008	5.951
2009	6.471
2010	5.019
2011	4.205
2012	4.121
2013	4.153
2014	3.8
2015	4.77
2016	5.21
2017	4.62
2018	3.69
2019	4.272
2020	4.685
2021	4.84
2022	4.634
2023	4.517
2024	4.453