Year Percent 2000 65.21851 2001 66.07747 2002 67.13209 2003 68.1879 2004 69.24528 2005 70.3033 2006 71.36282 2007 72.42368 2008 73.48598 2009 74.54908 2010 75.61406 2011 76.68027 2012 77.74759 2013 78.81561 2014 79.88443 2015 80.95415 2016 82.02488 2017 83.09647 2018 84.169 2019 85.24234 2020 86.31681 2021 87.39227 2022 88.36761