Year % change from 1990 1991 -5.88074273651069 1992 5.17237829845263 1993 2.55772192274701 1994 -15.4260776589746 1995 -10.4482336429304 1996 -10.4608535358802 1997 -10.5015515800145 1998 225.053849452481 1999 229.247109700015 2000 242.324593496574 2001 201.331714064894 2002 166.119799874429 2003 80.6215781294487 2004 91.4278712147712 2005 70.7671823114219 2006 201.369518369843 2007 122.506729307906 2008 442.691554894373 2009 109.298329560519 2010 410.45307242225 2011 410.45307242225 2012 410.45307242225