Year Percent 2000 90.14569 2001 90.55147 2002 90.9003 2003 91.24823 2004 91.59525 2005 91.94137 2006 92.28657 2007 92.63086 2008 92.97423 2009 93.31671 2010 93.65815 2011 93.99879 2012 94.33851 2013 94.6322 2014 94.8292 2015 95.02534 2016 95.22051 2017 95.41466 2018 95.42024 2019 95.42703 2020 95.43497 2021 95.44406