Year % (national estimate) 1997 41.09 1998 40.65 2002 63.56 2003 63.87 2004 63.99 2005 63.96 2006 64.25 2007 65.27 2008 66.41 2009 66.08 2010 67.06 2011 67.75 2012 67.95 2013 67.97 2014 68.04 2015 68.28 2016 66.73 2017 66.63 2018 66.73 2019 66.72 2020 65.9 2022 95.1