Year % (national estimate) 2002 65.7 2009 70.7 2010 76.361 2011 76.354 2012 75.202 2013 74.244 2014 72.919 2015 73.861 2016 74.025 2017 73.998 2018 74.112 2019 74.208 2020 73.647 2021 74.932