Year % (national estimate) 1998 51.82 2000 46.3 2002 34.71 2003 52.475 2004 55.32 2005 54.3 2006 51.693 2007 51.7 2008 51.272 2009 50.531 2010 51.058 2011 52.595 2012 53.715 2013 51.596 2014 52.097 2015 51.728 2016 49.804 2017 50.902 2018 49.636 2019 51.405 2020 50.42 2021 47.718 2022 50.621