Year % change from 1990 1991 4.41864376730294 1992 9.73056274065016 1993 11.3814171481564 1994 13.8737231619669 1995 14.4219622960582 1996 30.0301849738836 1997 95.5483982416343 1998 114.719947994563 1999 167.621160394041 2000 201.354232487942 2001 205.918346008901 2002 223.295162676098 2003 250.993512958173 2004 309.790569014033 2005 327.312855434886 2006 373.917727762448 2007 442.570359628507 2008 547.040372402569 2009 616.965864613119 2010 816.407169840483 2011 825.571241538888 2012 834.735313237293