Year	% of total employment
1983	30.85
1985	33.99
1987	45.07
1988	47.12
1989	47.95
1990	46.75
1991	51.18
1992	61.48
1993	60.89
1994	61.37
1995	61.73
1996	47.7
1997	48.11
1998	48.18
1999	49.05
2000	56.4
2001	56.4
2002	59.3
2003	57.18
2004	59.83
2005	54.81
2006	55.46
2007	56.39
2008	56.36
2009	57.21
2010	57
2011	56.01
2012	56.99
2013	58.21
2014	56.74
2015	57.79
2016	56.65
2017	56.45
2018	58.08
2019	57.43
2020	59.58
2021	60.52
2022	60.41
2023	61.84