Year	% of total employment
1998	14.12
1999	13.53
2000	15.7
2001	15.21
2002	15.37
2003	5.86
2004	19.33
2005	17.52
2006	18.46
2007	17.22
2008	18.41
2009	23.01
2010	20.72
2011	4.45
2012	21.06
2013	21.46
2014	23.27
2015	24.42
2016	24.17
2017	26.22
2018	23.73
2019	22.74
2020	28.93
2021	28.66
2022	28.32
2023	30.17