Year	% of population
2000	46.8142131635351
2001	47.1204254367107
2002	47.440924376313
2003	47.7752200043611
2004	48.1234179210885
2005	48.4844084006916
2006	48.8594940550192
2007	49.24695322535
2008	49.6487021973559
2009	49.810322427133
2010	49.9773803285471
2011	50.1505279457527
2012	50.3291729374741
2013	50.7051291303828
2014	51.0835649326091
2015	51.4650911306671
2016	51.84971602427