Year % (national estimate) 1993 69.2 2000 49.6 2003 62.27 2004 60.9 2005 64.8 2006 60.9 2007 65.9 2008 58.46 2009 60.1 2011 59.91 2012 61.14 2013 59.88 2017 62.218 2018 62.51 2019 63.05 2020 45.286 2021 57.979 2022 64.968