Year Percent 2000 75.47529 2001 76.36679 2002 77.26085 2003 78.15745 2004 79.0566 2005 79.95829 2006 80.86253 2007 81.76931 2008 82.67864 2009 83.59051 2010 84.50493 2011 85.4219 2012 86.34141 2013 87.26346 2014 88.18807 2015 89.11521 2016 90.04491 2017 90.97715 2018 91.91193 2019 92.84926 2020 93.78914 2021 94.73156 2022 95.67652