Year	% of total employment
1998	17.33
1999	17.22
2000	15.33
2001	17.14
2002	17.92
2003	19.79
2004	19.92
2005	15.45
2006	14.55
2007	12.92
2008	18.27
2009	20.4
2010	19.62
2011	18.43
2012	18.51
2013	18.92
2014	17.28
2015	20.01
2016	19.06
2017	18.27
2018	16.54
2019	18.7
2020	21.06
2021	22.32
2022	18.56
2023	18.48