Year % 1994 0 1997 0 2001 0.054816 2002 0.0311284 2003 0 2004 0 2005 0 2006 0 2007 0.2319499 2008 0 2009 0 2010 0 2011 0 2013 0.7875171 2014 0.0342399 2015 0.0170568