Year % (national estimate) 2003 78.696 2004 73.289 2010 65.873 2011 67.889 2012 74.205 2013 64.676 2014 67.919 2015 69.9 2016 68.697 2017 71.757 2018 70.289 2019 68.811 2021 72.561 2022 67.905