Year Percent 2000 96.71903 2001 96.73189 2002 96.74476 2003 96.75763 2004 96.7705 2005 96.78337 2006 96.79624 2007 96.80911 2008 96.82197 2009 96.83484 2010 96.84771 2011 96.86058 2012 96.87345 2013 96.88632 2014 96.89918 2015 96.91205 2016 96.92492 2017 96.93779 2018 96.95066 2019 96.96353 2020 96.97639 2021 96.97639 2022 96.97639