Year	% of population
2008	16.7138989335041
2009	16.8094272745255
2010	16.9057344307889
2011	17.0024327200367
2012	17.1004941935734
2013	17.2001166345731
2014	17.3009079562885
2015	17.4032598362622
2016	17.5067803566072
2017	17.6116661766706
2018	17.7179166139126
2019	17.8253363195009
2020	17.9339266812519
2021	18.0436865423184
2022	18.1546153303463