Year % change from 1990 1991 0.0549665527730392 1992 0.187234770541966 1993 0.702051187008657 1994 1.61684035780494 1995 2.88804089384842 1996 9.37868786759832 1997 16.1901050700705 1998 31.7320166705472 1999 -44.6819068166446 2000 45.4653385987172 2001 72.0425380924547 2002 -11.7535201562508 2003 -4.24134237192515 2004 31.3449143266281 2005 71.0794353810358 2006 23.2014334073085 2007 31.7529221771824 2008 52.8097491972824 2009 86.1285092659039 2010 66.16441810698 2011 66.1644181069563 2012 66.1644181069527