Year Percent 2000 86.16145 2001 86.59842 2002 87.03552 2003 87.47274 2004 87.91008 2005 88.34754 2006 88.78513 2007 89.22284 2008 89.66066 2009 90.09861 2010 90.53669 2011 90.97488 2012 91.4132 2013 91.85163 2014 92.29019 2015 92.72887 2016 93.16768 2017 93.6066 2018 94.04565 2019 94.48482 2020 94.92411 2021 95.36352 2022 95.80305