Year	current US$
1964	-1633986.928104575
1965	-8683473.389355741
1966	-14425770.30812325
1967	-14779005.524861878
1968	-10444177.671068428
1969	9963985.594237695
1970	7563025.210084034
1971	-4693140.794223826
1972	-5867665.418227216
1973	7107843.137254902
1974	-13216374.269005848
1975	-63606194.69026549
1976	-43935309.97304582
1977	-48516579.40663176
1978	-40210124.164278895
1979	-79659413.43424787
1980	-168952380.95238096
1981	-186453839.51682484
1982	-131799838.57949959
1983	-109124668.43501326
1984	-19362549.80079681
1985	-15312131.919905772
1986	-15162813.82053195
1987	57926748.52392565
1988	151227169.8345328
1989	58281646.13043987
1990	4476843.231250743
1991	17588892.65154078
1992	-8914697.637164596
1993	-33018502.20264317
1994	35227543.88955173
1995	-68375264.83050847
1996	-138483762.3547301
1997	-15972491.085073866
1998	-48475313.37938091
1999	-40788160.957765214
2000	-135188566.51211703
2001	-215302084.38223743
2002	-266797999.0471653
2003	-250323267.60083482
2004	-183191796.54240552
2005	-193548699.67621684
2006	-154240390.2348114
2007	-196169015.93401548
2008	-305041899.83951116
2009	-354269342.6668439
2010	-455991535.63006544
2011	-1164179789.1179957
2012	-738217851.6854594
2013	-1485908594.5547822
2014	-1086569854.5453098
2015	-1184513159.9684792
2016	-1087291452.7006617
2017	-822056456.068659
2018	-888971273.5033598
2019	-802954644.5087197
2020	-868478626.5452429
2021	-1042530359.6701926
2022	-996536787.2918246
2023	-1021409413.9128438