Year	% of population
2005	48.398353589879
2006	47.927951306373
2007	46.9713315373708
2008	46.4393517232493
2009	45.7922500143518
2010	45.3684210331004
2011	44.9534001871237
2012	43.7884296230798
2015	43.9165016974738
2016	44.5021713903374
2017	41.7824413982302