Year Percent 2000 91.82866 2001 92.00624 2002 92.18497 2003 92.36372 2004 92.54246 2005 92.72121 2006 92.89996 2007 93.07872 2008 93.25748 2009 93.43625 2010 93.61502 2011 93.7938 2012 93.97258 2013 94.15136 2014 94.33015 2015 94.50895 2016 94.68775 2017 94.86655 2018 95.04536 2019 95.22417 2020 95.40298 2021 95.5818 2022 95.76063