Year % of population 2000 16.639283681934277 2001 16.585586974847935 2002 16.64530360573162 2003 16.69407787548956 2004 16.739509947176387 2005 16.56371531624154 2006 16.030355950775167 2007 15.852216321205571 2008 15.678453839372303 2009 15.513521914206557 2010 15.354590309561893 2011 15.199395326295702 2012 15.048103132642014 2013 14.896520038689577 2014 14.741632419364764 2015 14.823274518145508 2016 14.64741043636697 2017 14.462149857303263 2018 14.506877044686806 2019 14.550792674199592 2020 14.555008839702804 2021 14.584835707192797 2022 2.653780519190617