Year	US Dollars
1965	-45281533.00958
1966	-28218926.36829
1967	-656254.10159
1968	-5059911.50538
1969	-25283950.61728
1970	-29432098.76543
1971	-32888888.88889
1972	-23111111.11111
1973	-36567171.45615
1974	-62095863.44618
1975	-70368961.58235
1976	-49445401.24282
1977	-34960000
1978	-78614682.32999
1979	-77416683.33333
1980	-139916666.66667
1981	-152833341.66667
1982	-172846926.86471
1983	-271247885.17995
1984	-227059769.46718
1985	-221916058.82518
1986	-246320388.39918
1987	-268913255.87964
1988	-381294037.63319
1989	-395379676.10345
1990	-403897728.38883
1991	-458559866.96231
1992	-332501113.58575
1993	-377850000
1994	-506077551.02041
1995	-420050226.90763
1996	-579784999.09174
1997	-559740487.46274
1998	-537368845.84342
1999	-345813097.86608
2000	-502316490.51687
2001	-641455782.31292
2002	-650860002.634
2003	-813348972.0381
2004	-929747244.57147
2005	-1211048594.33818
2006	-1616003937.79718
2007	-1948231956.02057
2008	-2569878630.43575
2009	-2859043815.89131
2010	-4291885800.15026
2011	-4543077218.9607
2012	-4432070224.89592
2013	-5158477326.11152
2014	-5849872317.5485
2015	-6391433048.57909
2016	-6316505679.72928
2017	-7894262043.54478