Year % 1996 33.71429 1999 35.30678 2000 35.4925 2001 0 2002 0 2003 0 2005 0 2006 0 2007 0 2010 0.8481693 2011 0.7014883 2012 0.0530842 2013 0.0877482 2014 0.0194734 2015 0.0120865 2016 0.0109349 2019 0 2020 0