Year Percent 2000 87.10972 2001 87.63379 2002 88.15786 2003 88.68194 2004 89.20601 2005 89.73009 2006 90.25416 2007 90.77824 2008 91.30231 2009 91.82638 2010 92.35046 2011 92.87453 2012 93.39861 2013 94.05794 2014 94.71879 2015 95.38114 2016 96.04501 2017 96.71038 2018 97.37726 2019 98.04565 2020 98.71556 2021 99.38697 2022 100