Year % 1996 92.67 1999 92.76 2001 92.76 2002 92.76 2003 92.76 2006 92.37 2007 92.37 2008 92.37 2009 91.2 2010 91.2 2011 91.2 2012 91.2 2013 86.64 2014 86.64 2015 86.64 2016 86.64 2017 86.64 2018 86.66 2019 86.6 2020 86.6 2021 86.6