Year	current US$
1970	134439693.42476806
1971	43287659.92571193
1972	8600494.913390158
1973	-88206375.49161665
1974	-518011599.0057995
1975	-706175276.9551388
1976	-382281086.7293626
1977	-819480022.5098481
1978	70933777.37927501
1979	-653593835.9933957
1980	-619231618.1542282
1981	-301392872.6640591
1982	-131202542.82182588
1983	496634319.5266272
1984	782220050.2652891
1985	422845301.99062437
1986	376042983.56510746
1987	412767152.89032954
1988	783692814.0427866
1989	935076781.3267813
1990	1443435538.3872526
1991	1549606615.4754872
1992	1929271016.3111668
1993	386880830.2238806
1994	443931757.89727515
1995	-146911603.72194853
1996	-38177198.69706841
1997	139332431.21335137
1998	233364080.9068682
1999	115822189.69652535
2000	410609507.3050989
2001	71144331.52165362
2002	-206893422.28470626
2003	77301238.87921552
2004	21752119.810424767
2005	814650215.7945522
2006	338484330.84705836
2007	307298179.2992167
2008	256299731.00624993
2009	-1000206843.4210931
2010	707793499.7500013
2011	34268546.3715954
2012	-254185160.42109382
2013	-201413085.00117704
2014	-40009129.62039202
2015	990597518.0335933
2016	402589517.36498153
2017	708636575.50706
2018	597307895.7866663
2019	428295274.80784243
2020	480357426.7953321
2021	562640210.1666576
2022	188576790.97081786
2023	-155230167.96274784