Year	% change from 1990
1991	-14.3223589136787
1992	-21.3936700167147
1993	-25.5217541183614
1994	-31.6921033158088
1995	-46.1545447445425
1996	-46.9150956262653
1997	-49.3192502665955
1998	-64.3610328783275
1999	-65.2469469609809
2000	-65.7725610578659
2001	-68.8414691719381
2002	-69.1233509255101
2003	-63.0883261638932
2004	-56.8848081736384
2005	-50.0666607958961
2006	-47.0528573855297
2007	-42.9464972536134
2008	-38.3537321409101
2009	-41.1895049700734
2010	-36.309559574596
2011	-36.3095595745989
2012	-36.3095595745907