Year % (national estimate) 2001 51.643141708578945 2006 55.297176283671554 2007 54.18419986971143 2008 56.140256863690766 2009 57.510543177252075 2010 58.982790356881175 2011 59.09963072912896 2012 58.129251700680264 2013 58.93068801400463 2014 60.39676573586844 2015 60.94638949671772 2016 58.610034374314345 2017 61.258730640753114 2018 59.2631777819762 2019 64.15098031542283 2020 61.978726996454505 2021 65.89803463708893 2022 66.53019612919931 2023 67.94206727671092