Year Percent 2000 94.6 2001 94.6 2002 94.6 2003 94.6 2004 94.6 2005 94.6 2006 94.6 2007 94.6 2008 94.6 2009 94.43003 2010 93.87613 2011 93.32223 2012 92.76833 2013 92.21443 2014 91.66053 2015 91.10663 2016 90.55272 2017 89.99882 2018 89.44492 2019 88.89102 2020 88.33712 2021 87.78322 2022 87.22931