Year	% of total employment
1983	16.67
1984	25.33
1985	15.57
1986	15.27
1987	27.13
1988	17.6
1989	16.7
1990	17.83
1991	17.64
1992	28.06
1993	31.8
1994	32.3
1995	39.17
1996	32.73
1997	36.72
1998	30.41
1999	30.11
2000	31.36
2001	30.75
2002	31.95
2003	33.52
2004	35.74
2005	35.64
2006	36.47
2007	35.73
2008	36.92
2009	40.57
2010	40.96
2011	41.5
2012	42.09
2013	41.86
2014	40.91
2015	41.3
2016	39.58
2017	37.78
2018	35.24
2019	34.99
2020	39.88
2021	29.02
2022	38.61
2023	41.77