Year % 1995 2.280291 1998 2.430204 1999 0.2673916 2000 0.1161265 2001 0.0085356 2002 0.0073526 2003 0.0072214 2004 0 2005 0 2006 0 2007 0 2008 0 2009 0 2010 0.0512699 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2018 0 2019 0 2020 0 2021 0