Year	% of total employment
2005	26.03
2006	22.6
2007	21.33
2008	22.15
2009	26.3
2010	27.02
2011	25.07
2012	24.81
2013	25.96
2014	27.17
2015	24.19
2016	29.08
2017	25.89
2018	31.21
2019	25.45
2020	28.62
2021	25.37
2022	28.52