Year % change from 1990 1991 -3.56599012377906 1992 -10.4885901368313 1993 -12.2142095760186 1994 -14.8268398268398 1995 -16.411603471905 1996 -12.2332441427919 1997 -6.56039939959537 1998 -4.76679936478932 1999 -3.00039156823076 2000 6.36407143944833 2001 0.380147490700256 2002 0.531336335356447 2003 4.4704039678914 2004 7.5208292544976 2005 7.13850638473754 2006 12.2479279514455 2007 10.1769670865148 2008 11.8889904065783 2009 2.417933824969 2010 3.32180382431639 2011 4.35502186255956 2012 5.3882399008027