Year % change from 1990 1991 -14.3445862690377 1992 12.9603729614432 1993 -13.7850515372619 1994 -8.3443915320046 1995 -2.89833143680961 1996 -7.70956456759289 1997 -7.19071134300318 1998 -4.52330620491535 1999 -4.56190956633435 2000 -3.02333571366296 2001 -0.636490262351308 2002 -1.13880972385715 2003 -3.3994186989774 2004 6.38032460811271 2005 5.03528041843997 2006 28.2929189993445 2007 74.6189891033731 2008 35.7843643884837 2009 38.3646223643147 2010 34.0811151592575 2011 35.42192631085 2012 36.7627374624426