Year Percent 2000 72.71485 2001 73.93148 2002 75.14812 2003 76.36475 2004 77.58139 2005 78.79802 2006 80.01466 2007 81.23129 2008 82.44793 2009 83.66457 2010 84.8812 2011 86.09784 2012 87.31447 2013 88.53111 2014 89.74774 2015 90.96438 2016 92.18101 2017 93.39765 2018 94.61428 2019 95.83092 2020 97.04755 2021 98.26419 2022 99.48083