Year % change from 1990 1991 3.18616967838465 1992 6.90367332579778 1993 0.261481569383459 1994 -4.76377468731227 1995 -10.437563431966 1996 -12.2068838977551 1997 -14.7828448728638 1998 22.5016536526929 1999 4.44072545448782 2000 16.1587501067909 2001 33.0155267868993 2002 33.2871995318404 2003 44.6609100085423 2004 72.6123120295253 2005 92.8204202473973 2006 115.047974028086 2007 127.346750887058 2008 140.665300350424 2009 199.78880546942 2010 187.354950715186 2011 187.354950715186 2012 187.354950715186