Year	% change from 1990
1991	-15.1569035571679
1992	-20.3152630097153
1993	-24.4437411075592
1994	-22.4367635852789
1995	-18.6426774778073
1996	-16.7050345784132
1997	-18.7895600807375
1998	-24.4655915110763
1999	-25.5831049567072
2000	-23.6000192044094
2001	-30.4577264433643
2002	-33.2055344138767
2003	-31.4321915829013
2004	-30.7658440718089
2005	-31.139653591485
2006	-32.9588822698463
2007	-33.138624287819
2008	-34.6773925608176
2009	-39.7114531494124
2010	-36.2606458608122
2011	-36.9010437811671
2012	-37.0629388169393