Year	US Dollars
1960	-340045201.37666
1961	-361655724.50106
1962	-387423919.93713
1963	-477868507.2028
1964	-657447202.72157
1965	-856689807.56178
1966	-646513217.17302
1967	-687118075.8965
1968	-876497740.54394
1969	-1016078384.91418
1970	-965003409.09091
1971	-1022221590.90909
1972	-1191752272.72727
1973	-1889590333.71692
1974	-1786125000
1975	-2008129649.30925
1976	-2112578358.20896
1977	-2424215541.16559
1978	-2581454545.45455
1979	-2824694572.21711
1980	-3374357314.14868
1981	-2283044895.44895
1982	-4059933673.46939
1983	-4064668343.65325
1984	-3503811064.08706
1985	-3883236121.39156
1986	-4094851022.39533
1987	-3985256165.07297
1988	-5326146288.73409
1989	-7039989299.20269
1990	-10348193680.1376
1991	-10717784445.6908
1992	-10535666964.6049
1993	-9717044887.03924
1994	-8479170646.06742
1995	-11302476246.5068
1996	-13014238250.2831
1997	-9777232122.80045
1998	-13973589646.0279
1999	-12636863839.7613
2000	-14287285240.4643
2001	-14385185324.3848
2002	-15572748823.6401
2003	-22415386343.1151
2004	-20401524335.7338
2005	-20507520457.6545
2006	-28704432944.4235
2007	-39760755954.0104
2008	-44685375714.07649
2009	-32272286051.681
2010	-25819001039.1096
2011	-19494814877.1281
2012	-10931800781.2925
2013	-6745604411.99037
2014	-5696703200.27015
2015	101009920.46285
2016	-1392005975.31327
2017	-2155873067.15171