Year	% of population
2008	44.4628858616849
2009	42.6715127681865
2010	44.0387488009788
2011	42.4722234182976
2012	41.4277159416925
2015	40.7918672469731
2016	40.2877346217374
2017	41.725349591773
2018	40.3759558289699
2019	40.6117243614898
2020	41.2427910621949