Year	% change from 1990
1991	-6.37037208816948
1992	1.78681168326704
1993	-15.4360353883793
1994	-22.5479169323887
1995	-30.0221467249516
1996	-32.1753649571559
1997	-31.8066393794279
1998	-40.2774717948123
1999	-39.8235219090245
2000	-43.1837946268103
2001	-52.9718353953364
2002	-51.0216481337616
2003	-52.6387069095463
2004	-51.0529550224366
2005	-51.7654186426725
2006	-51.3074684322206
2007	-54.6309845436731
2008	-56.3961712834665
2009	-68.8632120867781
2010	-61.3306007444083
2011	-59.5794893002392
2012	-57.8283778560702