Year	% of population
2005	19.9605267494168
2006	20.1840629714846
2007	20.4113886455414
2008	20.6421871935002
2009	20.8761425262916
2010	24.4200511170471
2011	27.9398974348485
2012	31.4338413674952
2013	34.9006341871541
2014	38.3409029084751
2015	41.753598188802
2016	45.1391016623656
2017	48.4969593153711
2018	51.8270206745033
2019	55.1293324449055
2020	58.4039524419607
2021	61.6507298351674
2022	61.7285374284022