Year % 1992 1.615241 1993 0.5639869 1996 0 1997 0.0518717 1998 0.0182 1999 0.1431217 2000 0 2001 0.8676642 2002 3.084532 2003 3.211205 2004 3.097503 2005 2.981045 2006 2.916595 2007 0 2008 0 2009 0 2010 4.863686 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2017 0 2019 0.4383059 2020 0 2021 0