Year	% of total employment
1996	20.46
1997	12.29
1998	13.05
1999	10.82
2000	19.86
2001	11.2
2002	10.13
2003	16.21
2004	16.1
2005	14.77
2006	15.74
2007	15.93
2008	14.18
2009	15.13
2010	14.57
2011	17.21
2012	21.41
2013	23.87
2014	22.27
2015	22.86
2016	18.13
2017	23.54
2018	24.36
2019	26.07
2020	25.12
2021	27.36
2022	23
2023	26.59