Year % (national estimate) 2005 58.59 2006 59.6 2009 66.94 2010 65.89 2011 65.25 2012 63.08 2013 60 2014 60.96 2015 61.6 2018 60.506 2019 64.559 2020 64.415 2021 65.775 2022 59.341 2023 62.962