Year % 1995 0 1997 2.381888 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0.0204471 2009 0 2010 0 2011 0.0081132 2012 0.0375205 2013 0.0359156 2014 0 2015 0 2020 0 2021 0