Year	US Dollars
1964	0.2045
1965	0.998
1966	1.17647
1967	1.15385
1968	0.75472
1969	0.18519
1970	0.18182
1972	0.1845
1974	0.5618
1975	0.37736
1976	0.56391
1977	1.49813
1978	2.98507
1979	2.7881
1980	5.12164
1981	3.81471
1982	1.26242
1983	1.25156
1984	1.41786
1985	16.52079
1986	1.56844
1987	3.97587
1988	0.68555
1989	1.6995
1990	711.15529
1991	-79.97153
1992	-85.33151
1993	-81.81973
1994	-210.38435
1995	-34.81404
1996	-67.68781