Year	% of population
2008	55.3372235645848
2009	55.078966695555
2010	54.166278599739
2011	53.5361401508796
2012	56.4233211499685
2013	56.692805872133
2014	56.9956312973785
2015	56.5609738437132
2016	55.4817765798134
2017	57.5296330871087
2018	55.9055715499683
2019	48.8154976694611