Year	% of population
2008	8.85519610203092
2010	12.1385211865214
2011	11.7000731103497
2012	13.5362952525456
2014	12.0032614145624
2015	12.4854233836442
2016	13.1875268686884
2017	13.2385117116073
2018	13.3557787451988
2019	15.1735772816015
2020	15.6692039522016