Year Percent 2000 98.14592 2001 98.14592 2002 97.83716 2003 97.52829 2004 97.2193 2005 96.9102 2006 96.60099 2007 96.29167 2008 95.98224 2009 95.67269 2010 95.36303 2011 95.05326 2012 94.74338 2013 94.43339 2014 94.12328 2015 94.13946 2016 94.15564 2017 94.17182 2018 94.17182 2019 94.17182 2020 94.17182 2021 94.17182