Year Percent 2000 90.77574 2001 91.02559 2002 91.27578 2003 91.52631 2004 91.77718 2005 92.02838 2006 92.27992 2007 92.5318 2008 92.78401 2009 93.03657 2010 93.28945 2011 93.54268 2012 93.79624 2013 94.05014 2014 94.30438 2015 94.55896 2016 94.81387 2017 95.06912 2018 95.3247 2019 95.58062 2020 95.58062 2021 95.58062 2022 95.58062