Year Percent 2000 92.93224 2001 92.99867 2002 93.0651 2003 93.13153 2004 93.1921 2005 93.25265 2006 93.3132 2007 93.37374 2008 93.43427 2009 93.49479 2010 93.5553 2011 93.61581 2012 93.67631 2013 93.73679 2014 93.79727 2015 93.85775 2016 93.91821 2017 93.97866 2018 94.03911 2019 94.09955 2020 94.09955 2021 94.09955 2022 94.09955