Year	Years
1970	-0.5449
1971	-1.299
1972	-1.808
1973	-3.288
1974	-3.742
1975	-1.93
1976	-0.5846
1977	-1.26
1978	-0.7761
1979	0.373
1980	1.023
1981	1.875
1982	1.816
1983	3.298
1984	2.092
1985	-0.03405
1986	-0.2273
1987	-0.6552
1988	-1.209
1989	-1.763
1990	-2.029
1991	-3.033
1992	-3.04
1993	-3.407
1994	-1.801
1995	-2.049
1996	-3.092
1997	-1.806
1998	-1.108
1999	-1.035
2000	-2.091
2001	-1.297
2002	-0.9717
2003	-0.4245
2004	-0.6189