Year	% change from 1990
1991	-3.99438320763674
1992	-9.42691577448448
1993	-10.3663440746796
1994	-14.6679368176784
1995	-12.4522045250778
1996	-12.1426876219609
1997	-7.68518274352619
1998	-9.43812298929383
1999	-10.5558778545435
2000	-5.36166341437689
2001	-4.15458045461738
2002	-1.25487843468172
2003	-1.10654765044038
2004	-1.98433626918413
2005	-1.76579558040189
2006	-2.02422076894679
2007	-2.1250857022309
2008	-3.98284636886241
2009	-4.76768102948157
2010	-4.37180264753969
2011	-5.87815850111677
2012	-6.98853708556281