Year	% of population
2008	41.7609398350032
2009	37.485406880064
2010	38.2596642306378
2012	46.4591786290168
2013	46.6569340758526
2014	45.0460249356829
2015	52.7030609548866
2016	52.1550424571648
2017	51.8346961377747
2018	47.5538982139195
2019	47.3771957602703