Year % (national estimate) 1992 59.38022821571064 1993 61.75556050846207 1995 57.80693075643311 1996 57.59588210709245 1997 58.417013686695995 1998 58.30814231628157 1999 58.27953330398067 2001 58.92872340010642 2002 58.883619518764306 2003 58.567422799170785 2004 59.61482571603081 2005 60.08240971266042 2006 60.99457491966162 2007 60.11055694258093 2008 60.903755389796125 2009 60.17537017323292 2011 60.0127443092955 2012 60.237837441196184 2013 60.094253511091694 2014 59.6285870456148 2015 59.66158574489698 2016 58.789561778633924 2017 58.34704910485276 2018 58.61240952032746 2019 58.885636740735244 2020 53.58434685319158 2021 56.7828721053277 2022 58.9590386157937 2023 58.932217306404326