Year	%
2009	8.18222996575437
2010	8.09100817591632
2011	12.0810518467523
2012	16.964363970331
2013	17.4978622038032
2014	16.6112764865
2015	17.6113939029
2016	15.4489088582062
2017	12.9710977197129
2018	13.7365293816121
2019	12.1762298867312