Year	US Dollars
1960	-59972583.96162
1961	-8791981.71268
1962	-52886734.24416
1963	0
1964	11795234.72517
1965	130872922.39236
1966	102056531.89638
1967	22865417.96079
1968	47443649.88312
1969	25403225.80645
1970	-28225806.45161
1971	-32258064.51613
1972	11868295.82575
1973	36166323.0866
1974	-102610326.58673
1975	-123757172.95143
1976	-19046177.13853
1977	-113651281.45532
1978	-113309415.2238
1979	-311227008.81438
1980	-568972168.6415
1981	-422845654.24847
1982	-272144543.17744
1983	106382978.7234
1984	252463175.37165
1985	267665783.54225
1986	349657276.43726
1987	179969138.26589
1988	354985104.9349
1989	488967735.49611
1990	505463966.89127
1991	317401496.75373
1992	105872454.37715
1993	-64949379.61483
1994	-107506294.73225
1995	-20079067.5697
1996	-38667051.35603
1997	-668926242.87742
1998	-710855298.46542
1999	-765361935.92197
2000	-757170699.85785
2001	-564307851.13108
2002	165220623.79451
2003	374094020.63902
2004	376087086.03042
2005	335162762.57629
2006	-269524105.44418
2007	-241005602.6586
2008	-1458199844.38621
2009	254557603.68664
2010	397588450.24502
2011	-193161606.48642
2012	-1651684982.22603
2013	-1732595451.52722
2014	-1146037167.68476
2015	-198467190.4389
2016	813950209.86255
2017	1756995291.22905