Year Percent 2000 85.97817 2001 85.97817 2002 85.97817 2003 85.97817 2004 85.97817 2005 86.6973 2006 87.41642 2007 88.13554 2008 88.85466 2009 89.57379 2010 90.29291 2011 90.70628 2012 91.11481 2013 91.51851 2014 91.91738 2015 92.31142 2016 92.70063 2017 93.08501 2018 93.46455 2019 93.83926 2020 94.20914 2021 94.57419 2022 94.93441