Year	% change from 1990
1991	-0.555499999999998
1992	-1.111
1993	-1.6667499999995
1994	-2.22225
1995	-2.77775
1996	-3.33324999999951
1997	-3.88900000000001
1998	-100
1999	-100
2000	-100
2001	-100
2002	-99.9999999999998
2003	-100
2004	-99.9999999999998
2005	-100
2006	-99.9999999999998
2007	-100
2008	-100
2009	-99.9999999999976
2010	-100.00000000001
2011	-100.000000000008
2012	-99.9999999999972