Year	% of total employment
1983	18.65
1984	17.39
1985	17.05
1986	17.62
1987	17.48
1988	17.53
1989	17.64
1990	18.24
1991	19.55
1992	20.51
1993	22.63
1994	28.57
1995	24.74
1996	23.42
1997	22.93
1998	25.13
1999	38
2000	39.6
2001	40.22
2002	39.11
2003	39.16
2004	39.74
2005	39.38
2006	38.88
2007	38.55
2008	38.14
2009	39.17
2010	39.06
2011	39.49
2012	39.94
2013	40.68
2014	40.03
2015	40.27
2016	39.07
2017	39.08
2018	38.35
2019	40.61
2020	45.69
2021	41.67
2022	41.62
2023	43.28