Year	% of total employment
2002	30.44
2003	28.67
2004	28.71
2005	27.03
2007	22.97
2008	22.28
2009	24.23
2010	25.26
2011	26.14
2012	27.8
2013	27.94
2014	27.08
2015	26.98
2016	26.29
2017	26.81
2018	25.65
2019	26.88
2020	34.05
2021	26.18
2022	20.78
2023	21.54