Year Percent 2000 99.59759 2001 99.59759 2002 99.59759 2003 99.59759 2004 99.59759 2005 99.59759 2006 99.59543 2007 99.59201 2008 99.5886 2009 99.58518 2010 99.58176 2011 99.57835 2012 99.57493 2013 99.57152 2014 99.5681 2015 99.56469