Year % (national estimate) 1996 64.897 1997 58.038 1998 49.31 1999 64.772 2000 60.095 2001 71.349 2003 77.805 2007 78.233 2008 76.66 2009 77.521 2010 78.973 2011 78.476 2012 60.623 2013 74.535 2014 73.61 2015 73.758 2016 75.388 2017 74.098 2019 60.551 2020 73.475 2021 69.194