Year Percent 2000 89.97506 2001 90.37589 2002 90.77739 2003 91.17958 2004 91.58245 2005 91.986 2006 92.39023 2007 92.79515 2008 93.20075 2009 93.60702 2010 94.01399 2011 94.42163 2012 94.82996 2013 95.23896 2014 95.64865 2015 96.05902 2016 96.47008 2017 96.88181 2018 97.29423 2019 97.51228 2020 97.68332 2021 98.35941 2022 98.4696