Year	% of total employment
1983	14.51
1984	17.46
1985	18
1986	16.42
1987	16.83
1988	15.9
1989	16.76
1990	16.5
1991	17.01
1992	19.35
1993	18.6
1994	19.34
1995	19.13
1996	22.03
1997	19.6
1998	19.55
1999	20.04
2000	20.3
2001	21.01
2002	44.77
2003	21.28
2004	25.33
2005	28.52
2006	30.18
2007	29.75
2008	31.16
2009	32.81
2010	31.16
2011	30.93
2012	34.09
2013	34.83
2014	35.48
2015	35.39
2016	34.31
2017	34.75
2018	33.51
2019	33.35
2020	40.53
2021	35.56
2022	34.13
2023	34.64