Year	% change from 1990
1991	-7.42601852471819
1992	-10.3952856503854
1993	-11.8295652986821
1994	-17.2013500211259
1995	-20.6308160679617
1996	-20.0363793073471
1997	-24.916696819017
1998	-26.6129520549595
1999	-26.5762909749001
2000	-21.506266921971
2001	-23.3983777525083
2002	-20.9932780245226
2003	-18.9302541387252
2004	-18.4005049480089
2005	-15.4059937202381
2006	-14.9229608431582
2007	-12.8492032075536
2008	-7.79866293664935
2009	-11.018585266331
2010	-7.23298772512309
2011	-8.38666841761393
2012	-8.00869413692689