Year	% of total employment
1997	49.23
1999	19.65
2000	11.64
2001	21.11
2003	39.72
2007	36.04
2008	37.35
2009	40.11
2010	38.38
2011	37.19
2012	26.23
2013	29.34
2014	27.53
2015	27.34
2016	26.22
2017	25.04
2019	21.7
2020	27.95
2021	32.27