Year	% of population
2008	60.6344565162188
2009	58.6124376961317
2010	59.3002117039173
2012	60.1425581859963
2013	56.4840612942365
2014	54.4249006379076
2015	50.4339210425373
2016	52.2405794365302
2017	55.6947518206826
2018	54.8959426255417
2019	45.8732068953995