Year	% of population
2000	80.6461725738748
2001	80.6712485778784
2002	80.697556235523
2003	80.7254005845665
2004	80.7547757336457
2005	80.7870236509338
2006	80.8357507918115
2007	80.8860732414651
2008	80.9386665632115
2009	80.9928505979787
2010	81.048950444765
2011	81.1069673480345
2012	81.1669027053438
2013	81.2287535155048
2014	81.2921378883304
2015	81.3531277628567
2016	81.4159724476439
2017	81.4356769312004
2018	81.5210869682532
2019	81.6122389735586
2020	81.7087539746033