Year	% change from 1990
1991	-1.70762417070855
1992	-5.14426016355458
1993	-7.30347149136029
1994	-7.47264776436603
1995	-6.47684822803535
1996	-4.93281978068747
1997	-6.56749626484866
1998	-8.95187139703512
1999	-11.0799051636258
2000	-10.0421266041364
2001	-9.70464504079036
2002	-10.30528733687
2003	-8.23861671008725
2004	-8.32091085923766
2005	-8.93751435687387
2006	-8.89450197406797
2007	-9.81953372113617
2008	-11.2263852737647
2009	-16.406489542045
2010	-14.8507976444094
2011	-16.9434488271943
2012	-17.4017061942439