Year	% change from 1990
1991	-23.8456454903313
1992	24.9926730454271
1993	-40.345372525357
1994	-23.6807171795535
1995	-15.7630089360113
1996	-32.6822400367784
1997	-35.944602476798
1998	-51.2891992069649
1999	-50.6920093095423
2000	-53.7101973967761
2001	-22.1906157515157
2002	-11.6041720541333
2003	-49.765422521047
2004	-48.6981582047525
2005	-43.2399505789731
2006	-63.7476079648306
2007	-61.4120621785478
2008	-63.7587564290435
2009	-60.7537281268856
2010	-59.4980317788696
2011	-59.0930120966583
2012	-58.687992414447