Year	% of population
2008	43.085328577589
2009	40.8850369141459
2010	42.3895135052547
2012	47.9254706372092
2013	48.687496151917
2014	47.1448030325561
2015	49.6906123078658
2016	49.9879494759897
2017	50.6654789940766
2018	48.9162725309144
2019	47.4754519364206