Year Percent 1992 0.0004 1993 0.02668 1994 0.11353 1995 0.12754 1996 -0.0082 1997 0.96893 1998 0.40273 1999 0.6649 2000 1.21045 2001 0.90682 2002 1.4716 2003 4.44662 2004 1.51677 2005 2.74314 2006 15.80944 2007 48.72727 2008 46.59145 2009 -2.90396 2010 -18.92187 2011 6.14189 2012 6.14306 2013 -2.90193 2014 6.59502 2015 -6.32781 2016 53.16513 2017 -10.57919