Year	% of population
2000	44.3201066421854
2001	46.4419050594215
2002	48.5710943832554
2003	50.7071908991736
2004	52.8504952641214
2005	55.0011778896823
2006	57.1592261273773
2007	59.3246634555521
2008	61.4974761606532
2009	63.6776715273482
2010	65.8656831442135
2011	68.0615399987189
2012	70.2648240307922
2013	72.4871809055458
2014	74.7903961560031
2015	77.1032973360397
2016	79.425860729518
2017	81.7580706401371