Year Percent 2000 87.70691 2001 88.3722 2002 89.03748 2003 89.70276 2004 90.36804 2005 91.03332 2006 91.6986 2007 92.36388 2008 93.02916 2009 93.69445 2010 94.37151 2011 95.04875 2012 95.72615 2013 96.40371 2014 97.08145 2015 97.75935 2016 98.43741 2017 99.11564 2018 99.62139 2019 99.63382 2020 99.64625 2021 99.64625 2022 99.64625