Year Percent 2000 95.99309 2001 96.05967 2002 96.12626 2003 96.19285 2004 96.25943 2005 96.32602 2006 96.39261 2007 96.45919 2008 96.52578 2009 96.59237 2010 96.65895 2011 96.72554 2012 96.79213 2013 96.85871 2014 96.9253 2015 96.99189 2016 97.05847 2017 97.12506 2018 97.19164 2019 97.25823 2020 97.32482 2021 97.32482 2022 97.32482