Year	% of total employment
1983	28.54
1984	48.45
1985	41.12
1986	46.59
1987	41.46
1988	43.95
1989	45.13
1990	39.42
1991	45.85
1992	43.16
1993	43.1
1994	41.4
1995	48.1
1996	47.31
1997	44.76
1998	48.53
1999	39.86
2000	50.22
2001	46.06
2002	42.35
2003	46.81
2004	48.49
2005	43.04
2006	44.07
2007	43.54
2008	43.42
2009	44.37
2010	43.6
2011	42.29
2012	42.83
2013	43.23
2014	42.84
2015	42.44
2016	44.27
2017	43.51
2018	42.58
2019	44.3
2020	43.97
2021	43.09
2022	44.07
2023	44