Year	% of population
2008	39.3856942386248
2009	36.75282999505
2010	37.1520123941925
2012	42.4970632649198
2013	48.9809192380822
2014	39.419105656625
2015	40.6851464628014
2016	39.1459904555724
2017	42.9981039905912
2018	41.2259817454017
2019	41.4284000707609