Year % 1994 58.85297 1997 35.94183 2001 54.22083 2002 54.05447 2003 55.59908 2004 55.59908 2005 57.94864 2006 55.59908 2007 49.04999 2008 49.02038 2009 49.02038 2010 49.02038 2011 49.02038 2013 49.17824 2014 49.2565 2015 42.85105