Year Percent 2000 54.60648 2001 54.60648 2002 56.53996 2003 58.47344 2004 60.40692 2005 62.3404 2006 64.27389 2007 66.45654 2008 68.65374 2009 70.8655 2010 73.09182 2011 75.33268 2012 77.5881 2013 79.85807 2014 82.1426 2015 84.44168 2016 86.75531 2017 89.0835 2018 91.42623 2019 93.78353 2020 96.15537 2021 98.54177 2022 98.98636