Year	% of population
2006	83.6236987397787
2007	83.6234913206749
2008	83.6232838631136
2009	83.6231814702269
2010	83.6254493179723
2011	85.2576056853442
2012	86.8908077588569
2013	88.5241032730711
2014	90.156808101368
2015	91.7881423171799
2016	93.4173653226841
2017	95.0436463988573
2018	96.6662194346672
2019	98.2842647450298