Year	% of population
2000	11.9201110505529
2001	11.9684716643306
2002	12.2942565476214
2003	12.6236774657936
2004	13.0815252399964
2005	13.5511103750175
2006	14.032535254429
2007	14.5260420328821
2008	15.0320394097892
2009	15.5506898875387
2010	16.0823109686403
2011	16.6267536896129
2012	17.1843319776117
2013	17.7552084286539
2014	18.3393599953142
2015	18.9369277755163
2016	19.5480531851066
2017	20.1728786215665
2018	20.2685712894315
2019	20.3642631107744
2020	20.459745939771
2021	20.5548102087559