Year % change from 1990 1991 -4.26992663816609 1992 0.0679428110516689 1993 9.87101213970112 1994 -21.0072514689319 1995 -13.630974982377 1996 -10.3794632721828 1997 -9.65880618276259 1998 41.0164009889375 1999 -12.0322788105972 2000 -50.525901689284 2001 -54.3272497964243 2002 -29.9053924098603 2003 -18.481663328636 2004 0.136539497973187 2005 39.1017794677178 2006 -25.1536688554798 2007 69.912106676259 2008 -38.2398221098917 2009 -65.7244116347598 2010 53.6651409101608 2011 93.3719530034927 2012 93.3719530034927