Year Percent 2000 75.4237 2001 76.32097 2002 77.21658 2003 78.11051 2004 79.00256 2005 79.89271 2006 80.78096 2007 81.66712 2008 82.55141 2009 83.4338 2010 84.31414 2011 85.19246 2012 86.06892 2013 86.9434 2014 87.8159 2015 88.68661 2016 89.55554 2017 90.42258 2018 91.28775 2019 92.15109 2020 93.01277 2021 93.87268 2022 94.73098