Year Percent 2000 98.80753 2001 98.83259 2002 98.85752 2003 98.88038 2004 98.90201 2005 98.92336 2006 98.94444 2007 98.96525 2008 98.98578 2009 99.00607 2010 99.0261 2011 99.0459 2012 99.06543 2013 99.08476 2014 99.10398 2015 99.12313 2016 99.14223 2017 99.16128 2018 99.18028 2019 99.19927 2020 99.21824 2021 99.23719 2022 99.25616