Year	% change from 1990
1991	0.693877135633425
1992	-2.08745583096834
1993	-5.61841031614992
1994	-6.24854815583513
1995	-6.29250602477937
1996	-4.23051194603272
1997	-7.85579971433175
1998	-9.27334256312202
1999	-12.4982274876457
2000	-13.2965698568132
2001	-12.1151287157191
2002	-14.8823066849914
2003	-13.6702054385145
2004	-14.709228638468
2005	-15.1993586584747
2006	-15.2993076835064
2007	-16.8328148154924
2008	-18.2474249258821
2009	-24.7416890199398
2010	-21.5707833621844
2011	-26.9133424199082
2012	-24.6337559465148