Year % of population 2000 20.77075846862462 2001 21.397226532885004 2002 22.07663139695107 2003 23.174668328657326 2004 24.580633613249038 2005 25.9629850275592 2006 27.382965058751694 2007 28.85435667524904 2008 30.363467370529698 2009 31.92230043691236 2010 33.509333322158774 2011 35.12363161719566 2012 36.77326809497443 2013 38.450461323797306 2014 40.164162709229025 2015 41.89729468777612 2016 43.63996475929412 2017 45.362418265541834 2018 47.09506578740033 2019 48.80149628186292 2020 49.88752447572544 2021 50.94356176547478 2022 51.87328597956935