Year % (national estimate) 2000 59.26 2001 65.331 2003 57.575 2004 58.922 2005 60.137 2006 62.803 2007 57.865 2008 57.17 2009 53.414 2010 51.093 2011 48.981 2012 49.987 2013 47.63 2014 47.887 2015 49.269 2016 50.1 2017 51.442 2018 50.27 2019 49.428 2020 44.132 2021 52.019 2022 50.681 2023 49.444