Year Percent 2000 88.43625 2001 88.59343 2002 88.74929 2003 88.90367 2004 89.05672 2005 89.4009 2006 89.74382 2007 90.0856 2008 90.4261 2009 90.76525 2010 91.10323 2011 91.36616 2012 91.63466 2013 91.909 2014 92.18914 2015 92.54832 2016 92.90464 2017 93.25803 2018 93.60846 2019 93.95593 2020 94.30038 2021 94.64183 2022 94.98033