Year	% of population
2007	5.42858963791878
2008	4.79105307762038
2009	5.11579130515018
2010	5.78478638711005
2011	6.13029930216611
2012	5.68254966986786
2013	6.21010493046677
2014	6.48566022251038
2015	6.60105381746426
2016	6.72265652053681
2017	4.71885016495689
2018	5.52192160605433
2019	6.3096928213074