Year	% change from 1990
1991	-2.74427579820503
1992	-9.38325811556132
1993	-21.8393737742309
1994	-28.7769471888372
1995	-32.1786495527053
1996	-33.1413756499618
1997	-32.8444945457798
1998	-32.1095921403457
1999	-33.9212640268758
2000	-34.2319566135297
2001	-36.1224197191139
2002	-32.8489668353421
2003	-34.2711549161643
2004	-33.5262556281791
2005	-33.6660804459662
2006	-32.9628786812534
2007	-32.9686663500987
2008	-32.1357681880782
2009	-33.1789954974567
2010	-33.543092483002
2011	-34.983522809599
2012	-36.7881027369124