Year	current US$
1975	102653552.35265818
1976	12555068.833630452
1977	-379762770.9449174
1978	-646559744.1165498
1979	-715018898.5940707
1980	63896387.41902879
1981	172964881.24987137
1982	277840129.23211175
1983	334325259.83501714
1984	479910279.24952173
1985	657521403.1164193
1986	85028872.62355192
1987	21295245.93417023
1988	13765400.423629863
1989	-117893487.78039156
1990	58766321.26222653
1991	3190279.8949174266
1992	0
1993	-164964363.10533816
1994	-49882146.52997099
1995	22385306.489977796
1996	-16456717.447320111
1997	-51365221.541897185
1998	-12622529.358437814
1999	18488076.23041141
2000	-31477075.05827074
2001	-50114728.292788535
2002	-9127388.1744748
2003	-42894186.93263997
2004	-4369466.374323375
2005	17684065.27142462
2006	-16690428.616990518
2007	-48957471.01685941
2008	-39287924.15289528
2009	-11049678.43921483
2010	-81805063.41798614
2011	-62024473.716842376
2012	-59079740.1346922
2013	87020586.21705215
2014	105855860.23239437
2015	-116577253.18220691
2016	121880384.12751378
2017	53785648.78848832
2018	-4799345.97601032
2019	-61033326.524091825
2020	-216813819.1615691
2021	-28288786.72942665
2022	-113251946.0406757
2023	-47945510.12813587