Year	US Dollars
1964	-1633266.69379
1965	-8679996.528
1966	-14419994.232
1967	-14774781.24348
1968	-10440004.176
1969	9960003.984
1970	7560003.024
1971	-4693739.51431
1972	-5869262.79562
1973	7104865.3628
1974	-13209252.08747
1975	-63604646.78957
1976	-43941626.82865
1977	-48495420.84605
1978	-40208588.01956
1979	-79661674.40892
1980	-168984568.48924
1981	-186437753.42939
1982	-131837080.69269
1983	-109105567.72554
1984	-19362935.51664
1985	-15312131.91991
1986	-15162813.82053
1987	61542311.89339
1988	151227169.83453
1989	58281646.13044
1990	4476848.25657
1991	17586260.3701
1992	-8914697.63716
1993	-33018502.20264
1994	35227543.88955
1995	-68375264.83051
1996	-138483762.35473
1997	-15972491.08507
1998	-48475313.37938
1999	-40788160.95777
2000	-135188566.51212
2001	-215307504.46844
2002	-266797999.04716
2003	-250323267.60083
2004	-183191796.54241
2005	-193548733.16693
2006	-154240379.81988
2007	-196169029.07685
2008	-305041930.53283
2009	-354269342.66684
2010	-455991478.31716
2011	-1417823801.94567
2012	-1044123197.85169
2013	-1485908557.34973
2014	-1086569874.3848
2015	-1184513155.61466
2016	-1052153548.67692