Year	US Dollars
1960	-88245675.96188
1961	-134469601.46572
1962	-58830450.64125
1963	-96650026.05349
1964	-68635525.74813
1965	-197502227.15277
1966	-106455101.16036
1967	-44144366.0172
1968	-7844283.13548
1969	-11766424.70322
1970	-30396597.14998
1971	-108286425.32974
1972	116307426.79198
1973	124647887.32394
1974	-100621118.01242
1975	26063829.78723
1976	-9322033.89831
1977	-33428571.42857
1978	-48691099.47644
1979	2849002.849
1980	-30601659.75104
1981	-23953486.97945
1982	14379084.96732
1983	-17570546.34986
1984	-120303326.81018
1985	-132196417.87886
1986	-203873637.18655
1987	-331027210.88435
1988	-305567162.53444
1989	-399166457.04471
1990	-528400163.57805
1991	-564747282.6087
1992	-740272311.21282
1993	-964223420.64715
1994	-626335774.05858
1995	-545024186.82235
1996	-553451987.76758
1997	-1418317871.09375
1998	-961816176.47059
1999	-1354625281.32033
2000	-919064782.5289
2001	-1040649867.37401
2002	-755791014.63907
2003	-1215770650.66913
2004	-1870743413.00723
2005	-2712214498.51043
2006	-3171092307.69231
2007	-4036712895.6373
2008	-5549995368.18225
2009	-3379979486.08745
2010	-5284506918.23899
2011	-4915018520.96838
2012	-5221327987.52645
2013	-6345728877.74423
2014	-3675821298.02055
2015	-4368047982.5518
2016	-3074385723.05489
2017	-5112507240.38064