Year	current US$
1970	2500000.0186264515
1971	2550000.0454485402
1972	16450000.341981702
1973	10989999.70033765
1974	3960000.0716745816
1975	8909999.929368498
1976	11259999.86752867
1977	10889999.918639658
1978	21360000.222921368
1979	30320000.119507287
1980	133079997.39609662
1981	124840002.17914593
1982	92869998.30044813
1983	105869998.22966744
1984	126799998.8123775
1985	181729997.16922635
1986	152080002.26132572
1987	131630003.03134316
1988	165830003.9302558
1989	160189996.99316922
1990	135649995.6808984
1991	220969999.73431227
1992	141660001.86651945
1993	149400000.18477434
1994	273340001.6725063
1995	235430002.3019314
1996	58809999.79376799
1997	61790000.81121921
1998	59479999.87378724
1999	64989999.01115897
2000	88899998.64995475
2001	110939998.23927878
2002	137409998.66276982
2003	98630000.64156951
2004	121710000.1666695
2005	27180000.15243888
2006	17439999.66792761
2007	18199999.883770943
2008	24149999.696761377
2009	53599998.59891828
2010	93749998.38136137
2011	68360001.6236305
2012	93678500.9242594
2013	67638589.31139113
2014	7337299.793958664
2015	46498954.94710658
2016	112827003.06177145
2017	141708859.80129254
2018	65695411.20529177
2019	143154544.56582662
2020	139567095.0403437
2021	262030178.97903922
2022	148000200.77824596