Year	% of population
2008	15.8285018039511
2009	20.0565478705975
2010	16.7815053568687
2011	19.0379826504265
2012	17.7450502585818
2014	19.3968245290517
2015	20.7629301035073
2016	21.5244955766027
2017	23.7698036066292
2018	23.7427720870871
2019	23.5949920331405
2020	25.775652812091