Year % 1993 0 1997 1.193248 1998 0.5398402 2000 0 2003 0 2005 0 2006 1.067543 2007 0.7351397 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2018 0 2019 0 2020 0 2021 0