Year % (national estimate) 1992 18.121560780390197 1999 22.916808380382285 2000 21.138265373887634 2001 20.868631268040545 2002 21.075593247981733 2006 24.99427940721198 2007 24.355308552481443 2008 23.928830791575887 2009 23.446685723531633 2011 25.83344228003661 2012 26.14353820383971 2013 25.651912575294467 2014 26.08695652173913 2015 27.577319587628867 2016 28.379931060896208 2017 25.626833312077547 2018 27.893769411168158 2019 30.59940445784483 2020 36.98115099258071 2021 43.64697411800372 2022 43.26540349819816 2023 43.31625991764587