Year Percent 2000 89.10428 2001 89.10428 2002 89.46854 2003 89.83279 2004 90.19705 2005 90.56131 2006 90.92557 2007 91.28982 2008 91.65408 2009 92.01834 2010 92.3826 2011 92.74685 2012 93.11111 2013 93.47537 2014 93.83963 2015 94.20388 2016 94.56814 2017 94.9324 2018 95.29666 2019 95.66091 2020 96.02517 2021 96.02517 2022 96.02517