Year Percent 2000 98.10308 2001 98.21399 2002 98.3249 2003 98.43581 2004 98.54672 2005 98.65744 2006 98.74988 2007 98.84228 2008 98.93464 2009 99.02696 2010 99.11924 2011 99.21147 2012 99.30366 2013 99.39582 2014 99.48793 2015 99.58 2016 99.67202 2017 99.65626 2018 99.78057 2019 99.93063 2020 100 2021 100 2022 100