Year	US Dollars
1960	1.92291
1961	-0.04412
1962	-2.29897
1963	-0.54742
1964	-0.08967
1965	0.0703
1966	0.06186
1967	0.07991
1968	0.08921
1969	0.23268
1970	0.2391
1971	0.29859
1972	0.33164
1973	0.38512
1974	0.48239
1975	0.3786
1976	0.21395
1977	0.76412
1978	0.66771
1979	1.10824
1980	1.26134
1981	2.38242
1982	4.13707
1983	3.60718
1984	2.85126
1985	2.13184
1986	2.23832
1987	1.51315
1988	1.2716
1989	0.88646
1990	0.91598
1991	0.82802
1992	2.8823
1993	1.62889
1994	0.9103
1995	0.89947
1996	0.72539
1997	0.06921
1998	0.81035
1999	1.05428
2000	1.01915
2001	0.59359
2002	0.74171
2003	0.59566
2004	0.85539
2005	1.0292
2006	0.95734
2007	-4.96476