Year	% of population
2006	22.338095336173
2010	29.5752810172894
2011	29.3321188100386
2012	28.9695600571714
2013	30.5905578010903
2014	31.4423561133253
2016	34.6782291981871
2017	35.3628127833832
2018	33.9098504720057
2019	34.3003378479117
2020	31.1778247995353
2021	31.7598011976715