Year	% of population
2008	42.0224267494431
2009	42.6386617458562
2010	43.6988124601116
2012	46.7348118340406
2013	51.1819370109595
2014	48.403532914072
2015	52.6411944748768
2016	48.9281705193499
2017	49.239674013664
2018	51.0180810473435
2019	45.8067087873442