Year	% change from 1990
1991	-1.3856610482836
1992	-3.03192585311892
1993	-5.02442742692853
1994	-5.86810631197221
1995	-7.69190235139566
1996	-7.61191736522856
1997	-9.32860428834433
1998	-7.95091468907931
1999	-11.2163275214786
2000	-10.6021643887621
2001	-10.6582990577573
2002	-10.4820255386106
2003	-9.34814436767745
2004	-10.4545486187712
2005	-10.8094088428828
2006	-10.7410094091573
2007	-9.68872368876576
2008	-9.7091793352773
2009	-10.8152032030299
2010	-9.8631244390914
2011	-9.97751522723078
2012	-10.3137280804575