Year % change from 1990 1991 -7.2731260765504 1992 -2.22180647575302 1993 7.40344109051734 1994 -3.70688153591082 1995 6.20157539239659 1996 7.95115122347736 1997 8.74465353624629 1998 -3.47721745188989 1999 20.5717087394925 2000 -2.04246205059061 2001 15.7745679283138 2002 5.58032114264333 2003 3.74494384197046 2004 -1.7805417749937 2005 1.91988852260192 2006 -6.05190666348406 2007 -6.49252624041184 2008 -6.32801966337438 2009 -3.01466366469043 2010 2.75016289376746 2011 3.77766452270514 2012 4.80516615164281