Year	% of population
2008	48.6070904378664
2009	46.4444066125031
2010	47.2364222163972
2012	44.4269920111656
2013	41.8739681633961
2014	45.1238936997564
2015	44.7857772182205
2016	46.1333936938148
2017	44.1822602085986
2018	40.6292123748179
2019	33.9238128693002