Year % (national estimate) 1995 75.94563206372281 1997 73.98519613241201 1998 75.54501197413445 1999 75.71365976811128 2000 75.11820771878105 2001 76.53387612429547 2002 77.71328785685687 2003 77.62483640868123 2004 77.95823180395965 2005 77.15935967854683 2006 77.46126759156326 2007 76.1342703362327 2008 76.15460020071798 2009 76.16368701825819 2010 74.92991175423326 2011 75.93305183116985 2012 75.94440234959313 2013 75.09686441187856 2014 75.67616780865738 2015 76.50322210668082 2016 75.76182730226026 2017 73.77129509893192 2018 72.88769652240687 2019 73.01406861457363 2020 71.48324703475917 2021 72.14333523737281 2022 73.10146597530552