Year Percent 2000 92.74725 2001 92.74725 2002 92.74725 2003 92.74725 2004 92.74725 2005 93.0239 2006 93.30078 2007 93.57791 2008 93.85528 2009 94.13288 2010 94.41073 2011 94.68881 2012 94.96714 2013 95.2457 2014 95.5245 2015 95.80355 2016 96.08283 2017 96.36235 2018 96.64211 2019 96.9221 2020 97.20234 2021 97.48282 2022 97.76353