Year	% of population
2000	39.5929142057083
2001	39.6159533898881
2002	39.6391567220562
2003	39.6626872750575
2004	39.6863855079318
2005	40.0471257369989
2006	40.4066152229122
2007	40.7647522895655
2008	41.1215929670247
2009	41.477118893931
2010	41.8227401358162
2011	42.1624998978646
2012	42.5018190350301
2013	42.8406223220667
2014	43.1789155428576
2015	43.5166967336493
2016	43.8424757068156
2017	44.1303256181251