Year	% of total employment
1983	15.33
1984	14.62
1985	14.26
1986	14.32
1987	15.67
1988	12.62
1989	14.41
1990	14.43
1991	15.18
1992	16.73
1993	17.34
1994	18.33
1995	18.38
1996	18.01
1997	17.39
1998	18.58
1999	18.97
2000	19.65
2001	20.94
2002	20.03
2003	32.19
2004	31.44
2005	32.88
2006	38
2007	35.35
2008	38.95
2009	34.34
2010	33.12
2011	33.52
2012	32.62
2013	33.85
2014	32.82
2015	31.23
2016	31.74
2017	32.32
2018	32.11
2019	31.22
2020	35.73
2021	40.94
2022	36.17
2023	37.21