Year	% of population
2001	24.634696972578986
2002	23.915352829541632
2003	23.161126798285544
2004	22.073565075458383
2005	21.147555524407466
2006	20.33814456488136
2007	19.443522128237326
2008	18.70566929796997
2009	17.228328850342912
2010	16.297662666437507
2011	15.509232082276782
2012	15.683453802292451
2013	15.417450153965364
2014	15.694284868747367
2015	16.453531424978472
2016	17.07826003052109
2017	17.659396432359213
2018	18.004049539536236
2019	19.099955188904758
2020	20.1375660632995
2021	20.895282682131256