Year % change from 1990 1991 -4.22773835559516 1992 0.0724307147001557 1993 9.86357347210591 1994 -20.9230273876625 1995 -13.5706158077818 1996 -10.3185247431818 1997 -9.62483412667606 1998 40.6509145183932 1999 -12.2094401555481 2000 -50.6019971494196 2001 -54.4032162944647 2002 -30.0825578002888 2003 -18.6377809962443 2004 0.0799193292963407 2005 38.8763072009076 2006 -25.134507802255 2007 69.4946104533085 2008 -38.3389977191942 2009 -65.5644990357308 2010 53.2705361363297 2011 92.8510415409621 2012 92.8510415409613