Year % change from 1990 1991 -3.19627690828481 1992 -1.84184872602959 1993 -1.83350248384168 1994 1.01423535067571 1995 1.04494952192726 1996 -4.94297847337216 1997 -5.27382351370119 1998 3.16623043640831 1999 5.61768869184338 2000 -0.409299716895462 2001 1.85186421665509 2002 2.23011591261151 2003 10.1734015276962 2004 12.94902782971 2005 14.1024785000801 2006 19.2394236418995 2007 16.9929490945997 2008 24.439800224347 2009 29.3580738208429 2010 22.3729368089312 2011 23.5966661770205 2012 24.8203955451098