Year	% of population
2000	40.4032443895896
2001	42.1025203201858
2002	43.7957223096192
2003	45.9754580179688
2004	48.1592773016578
2005	50.3323356357116
2006	52.376582053526
2007	54.4132753165029
2008	56.1686286992478
2009	57.8800169846355
2010	59.6521519957274
2011	61.4867717092682
2012	63.3853852551618
2013	65.3492272532828
2014	66.8923652320581
2015	68.375413744068
2016	68.4570932665448
2017	68.5938521691882
2018	68.7864963622178
2019	69.0360602496858