Year % 1996 18.30501 1999 18.13404 2000 0.3218478 2001 0.2842524 2002 0.6982449 2003 0.2901179 2004 0 2005 0.303127 2006 0 2007 0.2873047 2008 0.243346 2009 0.2157788 2010 1.647705 2011 1.647705 2012 0 2013 0.7917941 2014 0 2015 0 2016 0 2017 0.0175685 2018 0.0121462 2019 0.0127861 2020 0.0127861 2021 0.0127861