Year	% change from 1990
1991	-2.25236583239946
1992	-17.6598493338314
1993	-25.6501369692442
1994	-34.3893973353256
1995	-42.4355621964886
1996	-47.6869318889304
1997	-43.5411219026273
1998	-43.884634541153
1999	-47.1709625202341
2000	-51.9795168721205
2001	-60.3811791806749
2002	-49.2532063254887
2003	-59.752988419873
2004	-57.2897210808119
2005	-56.098399950193
2006	-55.954893537542
2007	-52.9476403934753
2008	-53.5498381272569
2009	-56.6400510521728
2010	-54.2259681235214
2011	-53.2384870125113
2012	-52.2510059015012