Year	US Dollars
1960	-41723718.4874
1961	-13690578.21291
1962	-20201841.84996
1963	-21535144.2892
1964	-27586140.22558
1965	6932773.10924
1966	-60924369.7479
1967	-52880658.43621
1968	-53450365.12319
1969	-122352941.17647
1970	-72268907.56303
1971	-47386172.00675
1972	-40201005.02513
1973	-34843750
1974	-266917293.23308
1975	-283166904.42225
1976	-83828775.26754
1977	150169109.35738
1978	-130493273.5426
1979	-405202312.13873
1980	-908771929.82456
1981	-709922077.92208
1982	-901345506.9678
1983	-780492987.67531
1984	-358962264.15094
1985	-714617083.94698
1986	-743718772.3055
1987	-701902173.91304
1988	-750895944.67149
1989	-663550624.13315
1990	-633150274.58812
1991	-910273144.79091
1992	-898790782.56902
1993	-986879139.07285
1994	-1383265884.25739
1995	-1360273170.73171
1996	-1240691152.52397
1997	-1065687903.03441
1998	-948859581.0706
1999	-1218699350.2265
2000	-1731889365.01753
2001	-982190017.9051
2002	-1076275690.98892
2003	-1138427268.9598
2004	-1822670224.33047
2005	-2179492537.31343
2006	-3110580992.6895
2007	-3356924606.76189
2008	-5572316071.26373
2009	-2731224986.94971
2010	-4118025826.99452
2011	-8612327032.649
2012	-8115932601.88088
2013	-6401928588.02571
2014	-6406961021.75245
2015	-6067863542.73945
2016	-6005555982.96469
2017	-6285565811.98376