Year	% of population
2008	54.881641560331
2009	52.6750406567334
2010	54.9141325837502
2011	49.2324165037328
2012	55.6225322276573
2013	55.3664815865986
2014	51.5062690358033
2015	70.3648998543655
2016	72.5117014745519
2017	67.4287844162827
2018	71.8476419725411
2019	70.6798162332477