Year % change from 1990 1991 -14.1560473749384 1992 26.2148075387313 1993 -11.310973072951 1994 -9.26851016680189 1995 -3.59469492654966 1996 -19.1432733079217 1997 -21.2620008992674 1998 56.682170759434 1999 23.9860379928632 2000 18.4794250970681 2001 4.74708317339174 2002 12.6666259241927 2003 28.1380794672857 2004 24.9133395677471 2005 33.6443880365696 2006 13.8190739060116 2007 23.4342556522749 2008 16.7702713276115 2009 6.23895731792743 2010 17.5033729193589 2011 30.2196355631857 2012 30.5027786400036