Year Percent 2000 75.39701 2001 76.41844 2002 77.43987 2003 78.4613 2004 79.48273 2005 80.50417 2006 81.5256 2007 82.54703 2008 83.56846 2009 84.58989 2010 85.61132 2011 86.63276 2012 87.65419 2013 88.67562 2014 89.69705 2015 90.71848 2016 91.73992 2017 92.76135 2018 93.78278 2019 93.78278 2020 93.78278 2021 93.78278 2022 93.78278