Year	% of population
2008	46.6113853842536
2009	41.1331986781999
2010	47.1008538178638
2012	50.9913009908662
2013	48.3635706245243
2014	56.6158341342596
2015	54.4442644521521
2016	55.8707733461828
2017	57.2334558932759
2018	52.1834492189791
2019	53.9069912973685