Year	US Dollars
1960	-930111.59363
1961	80679491.91544
1962	94210075.23973
1963	47643120.38667
1964	-17128008.38389
1965	-69831396.49243
1966	-164205816.28614
1967	-104218563.73693
1968	-49207442.08515
1969	131854191.15129
1970	-11818417.57079
1971	-55318757.57242
1972	-95890112.5067
1973	-182431021.15398
1974	-471181905.18257
1975	-164187643.20139
1976	-1035863312.11168
1977	-2252385813.00475
1978	-892188477.21027
1979	-1150219351.51827
1980	-2821893214.20974
1981	-1701431052.35874
1982	-451971606.03372
1983	-1093201240.99893
1984	-729462898.01252
1985	-166888135.14233
1986	-18983055.43037
1987	-51297670.87505
1988	-560956090.4937
1989	-676115340.61362
1990	-155710153.6972
1991	-1507542368.88627
1992	-2574313673.92938
1993	-642064119.2476
1994	-3399090591.495
1995	-2869127883.17183
1996	-3760709643.87835
1997	-1726846318.63795
1998	-491318363.71721
1999	985883230.34306
2000	2621475953.56551
2001	3351677852.34899
2002	7874929418.40768
2003	7205654627.5395
2004	8852855723.86392
2005	10129187911.9513
2006	12079237234.9768
2007	17057664932.9319
2008	19036384942.1415
2009	13416185051.4032
2010	13733976993.9149
2011	12047885876.3001
2012	11444151646.411
2013	12111476856.2296
2014	14449311232.0605
2015	14239485821.3676
2016	13117808847.6349
2017	13185219746.9242