Year % change from 1990 1991 7.95339162665984 1992 -2.32746128291322 1993 -8.22202068197278 1994 16.0797902228882 1995 -8.59760846206169 1996 -3.84558511844323 1997 2.9933656016798 1998 0.949320294555456 1999 12.1824508827792 2000 20.1737956053272 2001 29.5970071272957 2002 16.3937658343273 2003 10.5164578424897 2004 10.6934079908518 2005 -0.970514880570972 2006 -8.75977168994785 2007 22.9172622509636 2008 -9.10134955294211 2009 -3.59322167565383 2010 -18.1760826490275 2011 -15.9615300682006 2012 -13.7469774873736