Year Percent 2000 89.48867 2001 90.03095 2002 90.60551 2003 91.16546 2004 91.71065 2005 92.32297 2006 92.92141 2007 93.50575 2008 94.07581 2009 94.63115 2010 95.17216 2011 95.6985 2012 96.21027 2013 96.70656 2014 97.18802 2015 97.65496 2016 98.1079 2017 98.5473 2018 98.97365 2019 99.18307 2020 99.29879 2021 99.29903 2022 99.29927