Year % 1995 62.54 1997 62.51 2001 62.5 2002 62.5 2003 61.93 2004 61.93 2005 61.93 2006 61.93 2007 61.36 2008 61.36 2009 61.36 2010 61.36 2011 61.36 2012 61.36 2013 61.05 2015 61.05 2016 61.05 2017 61.05