Year % 2001 98.1 2002 98.1 2003 98.08 2004 98.08 2005 98.08 2006 98.08 2007 98.06 2008 98.06 2009 98.06 2010 98.06 2011 98.06 2012 98.06 2013 98.06 2014 98.06 2017 98.1 2018 98.1 2019 98.1 2020 98.1 2021 98.1