Year % (national estimate) 2000 62.976127634645856 2001 61.965585968374974 2002 60.435851500483196 2003 59.93378421010555 2004 60.403861446731 2005 60.46290669117557 2006 60.58443249061614 2007 61.74368541760608 2008 63.989787536900366 2009 62.65328735075666 2010 63.79424680317082 2011 64.62227518529674 2012 65.00005448546537 2013 65.07515480702689 2014 65.19379413810526 2015 65.77932807848727 2016 65.65593422173993 2017 65.01297607334863 2018 64.91944193142156 2019 65.00272512606897 2020 63.565862710755084 2021 63.7071458040496 2022 66.80394398931482