Year Percent 2000 100 2001 100 2002 100 2003 100 2004 100 2005 100 2006 100 2007 100 2008 100 2009 100 2010 100 2011 100 2012 99.88095 2013 99.66667 2014 99.45238 2015 99.2381 2016 99.02381 2017 98.80952 2018 98.59524 2019 98.59524 2020 98.59524 2021 98.59524 2022 98.59524