Year	current US$
1960	-26599468.0106398
1961	-27159456.8108638
1962	-24919501.6099678
1963	-29819403.6119278
1964	-17079658.4068319
1965	-31639367.2126557
1966	-41159176.8164637
1967	-29273681.3035073
1968	-37561502.4600984
1969	-42841713.6685467
1970	-43321732.8693148
1971	-43928270.550006
1972	-59505988.0239521
1973	-44184059.5630416
1974	-60033285.7822159
1975	-102801574.438527
1976	-56516976.9989047
1977	-37324177.6497951
1978	-170084153.135001
1979	-186681356.347166
1980	-172761975.126216
1981	-72154585.0552887
1982	-74940786.3571767
1983	-92611508.3418454
1984	23489458.0444319
1985	-64568669.6527253
1986	-25307613.7767987
1987	-27889708.8785258
1988	-127240112.4429
1989	-250262728.755209
1990	-181281798.526879
1991	-133000000
1992	-346399994.449532
1993	-333200031.797947
1994	-379504155.029532
1995	-247628650.130531
1996	-206454512.199105
1997	-325684210.846377
1998	-93391098.93894
1999	-271208321.519866
2000	-169666383.401798
2001	-191148916.926256
2002	-355851926.038655
2003	-336977191.677143
2004	-478649281.483862
2005	-775260261.84943
2006	-763313935.749025
2007	-435370921.702548
2008	-886068337.00178
2009	-719765986.927531
2010	-840266947.178721
2011	-578971411.777109
2012	-932896036.225543
2013	-383537870.94825
2014	-358240773.38491
2015	-420519537.603447
2016	-650545609.013865
2017	-441494099.80521