Year Percent 2000 68.38059 2001 68.38059 2002 69.65385 2003 70.92411 2004 72.19135 2005 73.45557 2006 74.71678 2007 75.97498 2008 77.23016 2009 78.48233 2010 79.73148 2011 80.97762 2012 82.22075 2013 83.46086 2014 84.69796 2015 85.93204 2016 87.16311 2017 88.39116 2018 89.6162 2019 90.83823 2020 92.05724 2021 93.96874 2022 96.40161