Year Percent 2000 67.60144 2001 67.8237 2002 69.0337 2003 70.25016 2004 71.47308 2005 72.70244 2006 73.93826 2007 75.18053 2008 76.42926 2009 77.68443 2010 78.94606 2011 80.21414 2012 81.48868 2013 82.76966 2014 84.0571 2015 85.35099 2016 86.65134 2017 87.95814 2018 89.27139 2019 90.59109 2020 91.91724 2021 93.24985 2022 94.58891