Year % change from 1990 1991 112.923271915009 1992 100.795278714655 1993 24.3589773120553 1994 106.682633089192 1995 15.3592934541315 1996 13.1229337754332 1997 403.316324620903 1998 -25.9173734755071 1999 -84.2778341791621 2000 -90.9234688559745 2001 -66.2272157442209 2002 30.2191947187574 2003 -65.8259917158107 2004 -51.0420307723138 2005 -50.8606377777688 2006 79.518744230695 2007 -91.2168072414387 2008 -89.0154736862109 2009 -56.1472358298963 2010 -99.6320759823581 2011 -99.6320759823582 2012 -99.6320759823582