Year	% change from 1990
1991	-17.7863972615977
1992	-28.5526108171992
1993	-39.7831172810393
1994	-56.8479278725151
1995	-64.3745142474558
1996	-66.166329227278
1997	-68.4019625504287
1998	-70.5787772405118
1999	-71.2658409763424
2000	-69.7694230087339
2001	-74.3904118555734
2002	-45.9781421388958
2003	-74.742818481275
2004	-73.3952972429595
2005	-70.7221497697142
2006	-69.0213158496204
2007	-66.2878239427812
2008	-67.865130735127
2009	-65.3325100733057
2010	-65.7027195499966
2011	-61.6285374387036
2012	-61.7280937427163