1960	 0.029589395
1961	 0.02710997
1962	 0.013952919
1963	 0.008657336
1964	 0.006968285
1965	-0.005854042
1966	-0.001733678
1967	-0.013765663
1968	-0.007849885
1969	 0.010608426
1970	 0.001941683
1971	-0.001580464
1972	-0.005168354
1973	 0.011690219
1974	-0.012556373
1975	-0.054569831
1976	-0.033164573
1977	-0.023564923
1978	-0.023684971
1979	-0.025015645
1980	-0.028160872
1981	-0.035782775
1982	-0.032231225
1983	-0.024797864
1984	-0.01884976
1985	-0.011235395
1986	-0.012813827
1987	-0.018464375
1988	-0.020964126
1989	 0.001200752
1990	-0.019913899
1991	-0.0296018
1992	-0.0254342
1993	-0.0311986
1994	-0.0241457
1995	-0.0331564
1996	-0.0341531
1997	-0.0270885
1998	-0.0205687
1999	-0.0141958
2000	-0.0103475

