Year % 1990 0 1992 0.1418842 1996 0 1997 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0.1436359 2009 0 2010 0.1302309 2011 0.4315028 2012 0.3322465 2013 0 2015 0.3622498 2016 0.0226252 2017 0.0222385 2018 0.0410883 2019 0.0219232 2020 0 2021 0