Year % (national estimate) 1994 50.24 1996 48.45 1997 51.41 1998 50.26 1999 51.72 2005 54.99 2012 57.8 2013 57.402 2014 58.258 2015 58.678 2016 59.752 2017 59.811 2019 63.414 2021 55.542