Year Percent 2000 88.53829 2001 88.87096 2002 89.20419 2003 89.52902 2004 89.85303 2005 90.17872 2006 90.50613 2007 90.83521 2008 91.16594 2009 91.49836 2010 91.83242 2011 92.16812 2012 92.51515 2013 92.86215 2014 93.20959 2015 93.55731 2016 93.9052 2017 94.25313 2018 94.60087 2019 94.94836 2020 95.27689 2021 95.56887 2022 95.85974