Year	% of total employment
1986	20.07
1987	16.66
1988	16.9
1989	17.52
1990	16.05
1991	19.53
1992	23.22
1993	19.17
1994	19.61
1995	18.31
1996	22.95
1997	26.03
1998	24.58
1999	20.66
2000	25.22
2001	25.41
2002	27.97
2003	31.05
2004	22.6
2005	25.73
2006	26.21
2007	28.39
2008	28.7
2009	26.99
2010	26.35
2011	28.93
2012	29.7
2013	28.39
2014	28.75
2015	26.76
2016	29.86
2017	29.7
2018	28.82
2019	28.68
2020	34.42
2021	31.94
2022	30.9
2023	32.41