Year % 1990 0 1992 0 1995 0 1998 0 2000 0 2002 0 2003 0 2004 0 2005 0 2006 0 2008 0.01343 2009 0 2010 0 2011 0 2012 0 2013 0 2015 0 2016 0.2006242