Year	% of population
2008	12.9445352546414
2009	18.8360198836761
2010	14.0517015872946
2011	14.4033982302739
2012	15.0284445170667
2014	15.5691375617668
2015	15.6632061140998
2016	16.5316434532723
2017	18.2801009812938
2018	18.2350285973825
2019	18.3545035202815
2020	20.0728772026399