Year % (national estimate) 1996 42.26 1997 43.09 1998 44.53 2000 43.014 2001 51.877 2002 46.68 2003 46.174 2004 49.864 2005 49.529 2006 50.506 2007 50.08 2008 49.595 2009 46.958 2010 45.857 2011 45.308 2012 46.46 2013 46.548 2014 45.955 2015 49.794 2016 52.396 2017 53.618 2018 52.237 2019 52.028 2020 44.721 2021 50.039 2022 51.185 2023 50.64