Year	% of population
2007	10.538915197118
2008	15.2482232115122
2009	17.1562597411709
2010	19.4949072398509
2011	18.7048062034594
2012	28.7417186097379
2013	27.1142991606696
2014	23.7483775761486
2015	28.4516098444227
2016	28.0130902152051
2017	27.7852281195419
2018	29.9254249862884
2019	28.0421546536899
2020	41.4866575714703