Year Percent 2000 86.70683 2001 86.70983 2002 86.71282 2003 86.71581 2004 86.7188 2005 87.22809 2006 87.73741 2007 88.24676 2008 88.75615 2009 89.26558 2010 89.77504 2011 90.28454 2012 90.79407 2013 91.30363 2014 91.81323 2015 92.32287 2016 92.83254 2017 93.34224 2018 93.85198 2019 94.36176 2020 94.87157 2021 95.38141 2022 95.38141