Year	% of population
2000	82.7289401602113
2001	81.4913337302898
2002	80.2456277066712
2003	78.9924740822321
2004	77.731927952205
2005	76.4651921758255
2006	75.1911850715004
2007	73.9116643754537
2008	72.6249981876546
2009	71.564167741517
2010	70.5019994093283
2011	69.4379553403008
2012	68.3726092043155
2013	68.0342101382821
2014	67.6935786327006
2015	67.3501553547629
2016	67.0039454560034