Year	US Dollars
1962	-1147183292.05851
1963	396.48213
1964	391.7658
1965	588235263.8148
1966	476190458.7354
1967	606060620.25536
1968	285714230.39619
1969	0
1970	273421120.49135
1971	-199999955.32971
1972	125000067.99948
1973	1000000034.35845
1974	444444349.71487
1975	-81081003.15741
1976	1665000247.33942
1977	1300000007.90071
1978	1680327852.15191
1979	125448026.28133
1980	-1094188525.38844
1981	-354736981.04721
1982	2166280922.49493
1983	3447293429.5718
1984	2241000056.61242
1985	4830000122.01607
1986	2038888857.97962
1987	330476193.09965
1988	4189772694.54888
1989	4965320039.48227
1990	8096966435.702
1991	3029889879.39171
1992	-3511003028.4676
1993	-5692331931.93193
1994	-7914750000
1995	-1059250000
1996	-1767000000
1997	-6485500000
1998	-7530250000
1999	-4900250000
2000	-1846500000
2001	3508750000
2002	14670871631.3387
2003	14311594202.8986
2004	11530324282.1261
2005	11805942344.4323
2006	13069507211.5385
2007	12594785132.7093
2008	13446803975.2178
2009	16864736858.9572
2010	12270934023.3519
2011	8971758594.68138
2012	10642160447.0661
2013	-549718918.47334
2014	2127192190.98412
2015	-6393090842.8055
2016	-5294755173.39513
2017	-16941122192.029