Year % 1999 1.456997 2001 0 2002 0 2003 0.0516055 2004 0 2005 0.0071471 2006 0 2007 0 2008 0.0821072 2009 0.0743183 2010 0.1043339 2011 0.0869152 2012 0.0508452 2013 10.66067 2015 4.199312 2016 8.705626 2020 0.3725975 2021 0.4619375