Year % change from 1990 1991 -7.58805422942795 1992 9.58484207401362 1993 -5.0476849704305 1994 -3.04330296174584 1995 1.74413051301174 1996 -1.67638267105084 1997 -0.0281472713510755 1998 2.51056434896979 1999 4.78282063492423 2000 2.97984384234933 2001 7.2932324356602 2002 5.47878037353313 2003 6.26601745083788 2004 14.6664873424439 2005 14.3368357097377 2006 27.3284148302169 2007 53.454556557174 2008 34.4425039668292 2009 35.3803000803234 2010 35.5983688171165 2011 36.9599543718762 2012 38.3215415657784