Year	US Dollars
1961	-29456004.2148
1962	-30576004.37506
1963	-37408005.35264
1964	-48832006.98727
1965	-68652704.67018
1966	-91275618.7703
1967	-98331280.09856
1968	-102923059.69313
1969	-148728861.01467
1970	-228917011.98342
1971	-264612483.00861
1972	-146347425.1497
1973	130663258.05994
1974	103344337.5915
1975	-83911244.92735
1976	15009964.68214
1977	-21228203.18423
1978	-67851318.94484
1979	-2528659.73588
1980	-258160828.73752
1981	-512184398.21694
1982	-560460392.68788
1983	-442171988.99653
1984	-349766525.70665
1985	-250224932.52024
1986	-205888408.4826
1987	-204537834.56328
1988	-317033790.79691
1989	-429087098.27666
1990	-267944533.33302
1991	-374579831.93277
1992	94028612.89654
1993	780866721.17743
1994	757543781.09453
1995	803799281.54468
1996	567376176.02428
1997	-44080468.58657
1998	197886514.83514
1999	355698424.5766
2000	596334671.58565
2001	402984648.66787
2002	87361083.94668
2003	544142865.18277
2004	520159449.97982