Year % 2002 97.97 2003 97.76 2004 97.76 2005 97.76 2006 97.76 2007 98.23 2008 98.23 2009 98.23 2010 98.23 2011 98.23 2012 98.26 2013 98.26 2014 98.26 2015 98.26 2016 98.26 2017 98.32 2018 98.32 2019 98.32 2020 98.32 2021 98.32