Year % (national estimate) 1995 42.01435929854852 1998 37.647354291502474 1999 37.62451871479277 2001 34.41833388329654 2002 34.977348201237014 2003 33.34549605451728 2004 32.91160273115914 2005 31.18662952006668 2006 31.36474743785418 2007 30.650910120747366 2008 32.28249083054555 2009 32.33054500514799 2010 32.16059817062307 2011 31.692200442145126 2012 30.23194702433326 2013 30.62837638183832 2014 30.44368952972297 2015 30.69499058186762 2016 30.49866180814607 2017 30.586328539038753 2018 30.31943416258868 2019 30.641307206471662 2020 27.67555020210488 2021 28.329416091416014 2022 27.65406626878165