Year	% of population
2000	47.8490215460833
2001	47.9499921044848
2002	48.0510522344945
2003	48.1525882816235
2004	48.2546003543848
2005	48.3586973787552
2006	48.4810269788073
2007	48.6035816204254
2008	49.6355430745242
2009	50.6562652473173
2010	51.6661862480285
2011	52.6653540107565
2012	53.6538161414133
2013	54.6316167767009
2014	55.0807962688073
2015	55.1675448814715
2016	55.2550711039367
2017	55.3108450794464
2018	55.3749850927099
2019	55.4434373647134
2020	55.5159170451418