Year	% change from 1990
1991	-10.936995575336
1992	-28.6819316397734
1993	-27.8632542651039
1994	-24.7596544797399
1995	-23.9205894057472
1996	-22.7985334351906
1998	-29.2886813272864
1999	-24.6459160684192
2000	-20.5204788018198
2001	-21.8773662304298
2002	-19.2761591197846
2003	-16.8386052434965
2004	-9.34124812559827
2005	-10.4456237504917
2006	-8.03217065133466
2009	-14.0434746315208
2010	-8.93018954570163
2011	-5.83290838081159
2012	-3.07603570427286