Year % 1993 0 1996 3.71185 1998 0.2169009 1999 0.1161826 2000 0.5063432 2001 0 2003 0 2004 2.33005 2005 2.109833 2006 0.3009153 2007 0.3065134 2008 0.3509201 2009 0.2687822 2010 0.3104107 2011 0.270574 2012 0.3706872 2013 0.2945405 2014 0 2015 0.2224094 2016 0.3078856 2017 0.4477294 2019 0.4516129 2021 2.347316