Year Percent 2000 84.57746 2001 85.101 2002 85.6331 2003 86.16215 2004 86.68225 2005 87.19258 2006 87.69378 2007 88.18591 2008 88.66926 2009 89.14286 2010 89.60756 2011 90.06317 2012 90.50997 2013 90.94738 2014 91.37614 2015 91.7961 2016 92.20731 2017 92.60968 2018 93.00329 2019 93.38824 2020 93.76479 2021 94.1327 2022 94.49209