Year % 1988 14.64811 1989 15.88137 1990 0 1992 0 1995 0 1996 0.5111453 1997 0 1998 0 1999 0.800291 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0 2006 0 2007 0.6817444 2008 0 2009 0.1909774 2010 0 2011 0.193872 2012 0 2013 0 2014 0 2015 0 2016 0 2017 0 2018 0 2020 0 2021 0