Year Percent 2000 76.51508 2001 77.24806 2002 78.3301 2003 79.41239 2004 80.48798 2005 81.53565 2006 82.58657 2007 83.63973 2008 84.69518 2009 85.75264 2010 86.81155 2011 87.87215 2012 88.93387 2013 89.99605 2014 91.05903 2015 92.1234 2016 93.18817 2017 94.2525 2018 95.31563 2019 96.37657 2020 97.43446 2021 97.43598 2022 97.43753