Year % change from 1990 1991 -10.2214336910326 1992 1.58592354051625 1993 2.03527695615744 1994 5.76222251385539 1995 13.3568126066284 1996 14.6234819652934 1997 17.6908458595383 1998 14.0928638488174 1999 9.21900079750451 2000 21.4921158097699 2001 23.0181003240493 2002 16.635918997769 2003 15.3365670963769 2004 10.869153736662 2005 25.8762454698715 2006 39.6768592455002 2007 110.431409563997 2008 183.890156371455 2009 152.841740780747 2010 160.760001615199 2011 163.367601631351 2012 165.975201647503