Year	% of population
2008	60.8607289792489
2009	60.787896740785
2010	65.4678471066599
2011	63.5759829210142
2012	65.0376552942663
2013	65.0440473032927
2014	66.7626498336844
2015	66.8013764550223
2016	67.5389422678381
2017	71.0550670653648
2018	67.0184814036315
2019	64.8718984035682