Year	Years
1960	-0.2572
1961	-0.265
1962	0.2931
1963	-0.4154
1964	1.031
1965	1.806
1966	0.5547
1967	0.62
1968	0.6077
1969	0.1672
1970	0.7239
1971	1.578
1972	1.982
1973	2.298
1974	0.9391
1975	0.8419
1976	1.436
1977	1.697
1978	1.834
1979	2.434
1980	2.228
1981	1.863
1982	1.658
1983	1.219
1984	2.133
1985	1.833
1986	1.105
1987	1.105
1988	0.5663
1989	0.4554
1990	0.2678
1991	-0.4217
1992	-0.3468
1993	-0.06176
1994	-0.5786
1995	-0.5948
1996	-0.2487
1997	-0.2187
1998	-0.2035
1999	-1.215
2000	-0.5462
2001	-0.2063
2002	-0.2917
2003	-0.1669
2004	0.6476