Year	current US$
1970	56832579.3861402
1971	42551303.5442646
1972	57754490.5714191
1973	169151043.498606
1974	293323380.415912
1975	116266388.57694
1976	123533889.21065
1977	104825469.28885
1978	84264672.2525396
1979	401789784.994574
1980	767361795.897373
1981	347691383.699499
1982	318452506.267891
1983	531749257.662469
1984	415866070.280725
1985	298886527.204368
1986	108956494.935758
1987	209659215.284311
1988	1004552789.55488
1989	986317212.130782
1990	689971068.854536
1991	211405485.499272
1992	185947995.070943
1993	102290345.990778
1994	241968920.089066
1995	548047736.358526
1996	481848700.142158
1997	433978437.848716
1998	379466369.741406
1999	314289832.974789
2000	299029870.315337
2001	181670243.882007
2002	201880861.889616
2003	229515498.149705
2004	550104215.880633
2005	872881528.417577
2006	1833927596.98419
2007	2065963089.30879
2008	1754132454.77438
2009	1569556055.43084
2010	2992676380.27951
2011	6543825232.1382
2012	6323679952.86338
2013	4771596578.86353
2014	3278191828.8998
2015	2725396385.96645
2016	3315776768.84898
2017	3696103668.11464
2018	2996455019.46027
2019	2039310615.31834
2020	2832692663.78491
2021	10477385992.1863