Year Percent 2000 96.42777 2001 96.46589 2002 96.50401 2003 96.54213 2004 96.58024 2005 96.80876 2006 97.03743 2007 97.26626 2008 97.49523 2009 97.72435 2010 97.95362 2011 98.18304 2012 98.41261 2013 98.64234 2014 98.86272 2015 99.07997 2016 99.29539 2017 99.48655 2018 99.67771 2019 100 2020 100 2021 100 2022 100