Year % (national estimate) 1989 66.92 1992 47.17 1996 38.45 1998 44.96 2000 54.796 2001 53.677 2002 53.308 2003 53.596 2004 51.6 2005 51.727 2006 55.618 2007 57.228 2008 58.338 2009 58.85 2010 61.487 2011 62.671 2012 63.369 2013 64.013 2014 68.261 2015 68.964 2016 68.795 2017 67.222 2018 66.222 2019 68.29 2020 68.839 2021 71.935 2022 71.872 2023 69.558