Year % change from 1990 1991 -11.3782374719367 1992 12.3357959183072 1993 -11.2985956612195 1994 -5.66500808133886 1995 -0.322490761141825 1996 -3.45750295535779 1997 -4.07376486818852 1998 -2.15338044004429 1999 -4.15152841699742 2000 0.522973956922379 2001 3.28012728355283 2002 1.13597393949099 2003 0.751530297227854 2004 3.45356784480417 2005 6.64726453757223 2006 27.3345216540539 2007 64.6699874774858 2008 34.0725797449793 2009 31.9363823611563 2010 30.447023889171 2011 31.4811084354303 2012 32.5151836078779