Year	% of population
2005	49.423354116868
2006	50.9445321477687
2007	49.5716848428719
2008	48.7737096957994
2009	47.5651698903053
2010	47.5176503436336
2011	47.9852740533993
2012	45.700475714772
2015	45.6446721983995
2016	46.0622634032478
2017	41.5117344104051