Year	% of total employment
2007	21.6
2008	21.98
2009	22.38
2010	23.26
2011	22.7
2012	22.77
2013	22.69
2014	20.81
2015	30.94
2016	28.68
2017	28.82
2018	28.73
2019	30.05
2020	40
2021	31.35
2022	28.28
2023	29.58