Year % change from 1990 1991 27.2936406209888 1992 27.950799011552 1993 10.7570623701408 1994 18.6398853210212 1995 -3.19740853851022 1996 0.557896123208046 1997 104.21853224641 1998 56.3873135180416 1999 -26.6640651026328 2000 -39.7717057437335 2001 -40.9166640733281 2002 12.5749933622761 2003 9.18177178732515 2004 -20.3320365544248 2005 0.37433200556094 2006 19.2678117056585 2007 11.2007200668928 2008 -23.0335888832073 2009 -38.8335306837137 2010 14.6338134197055 2011 17.6957190091235 2012 17.6957190091235