Year % 1996 0 1997 0.0609326 1998 0 1999 0 2000 0.1925855 2001 0.0394753 2002 0 2003 0 2004 0.2071161 2005 0 2006 0.1675425 2007 0 2008 0.034187 2010 0 2011 0 2012 0 2013 0 2015 0 2016 0.0027421 2017 0 2018 0 2020 0 2021 0