Year % of population 2006 20.5665849042675 2010 26.6161907727735 2011 25.7579896368663 2012 27.0216468831896 2013 27.9678386020859 2014 26.0551770442463 2016 28.7445649669613 2017 30.2390946901143 2018 28.7512045843166 2019 32.1345746868627 2020 24.369265192243 2021 27.002368748629