Year	% of population
2008	49.9908614973931
2009	51.2840018602521
2010	52.106110189312
2011	52.8797109236421
2012	53.3627593750861
2013	53.0315119460687
2014	54.7513338154784
2015	53.4184288139101
2016	51.891755326253
2017	55.0573689244771
2018	52.3299844343251
2019	50.3475843276318