Year % change from 1990 1991 -13.8260595631886 1992 27.3021066587659 1993 -20.2877910946061 1994 -9.32083101204505 1995 -4.25666088369173 1996 -16.386269153011 1997 -19.707288416613 1998 201.340497254967 1999 65.9322697099306 2000 127.405018422557 2001 107.145375548271 2002 93.4139219756059 2003 173.518559975423 2004 133.101776336046 2005 183.871666862227 2006 76.3945300643612 2007 112.962311798202 2008 112.098419758974 2009 143.745801691465 2010 146.579590401438 2011 147.227106539076 2012 147.849578663038