Year	Percent of total labor force
1980	6.864
1981	7.018
1982	6.667
1983	6.504
1984	6.349
1985	6.818
1986	6.667
1987	7.092
1988	6.944
1989	6.667
1990	4.267
1991	4.58
1992	3.1
1993	3.118
1994	3.125
1995	3.24
1996	4.37
1997	3.32
1998	4.02
1999	3.62
2000	3.628
2001	3.81
2002	3.83
2003	5.1
2004	5.99
2005	4
2006	3.11
2007	2.92
2008	2.99
2009	3.28
2010	4.1
2011	4.27
2012	3.75
2013	4.1
2014	5.49
2015	4.59
2016	4.67
2017	4.462
2018	3.907
2019	3.355
2020	3.077
2021	3.024
2022	3.146
2023	3.392
2024	3.709