Year	current US$
1970	39143.5391081775
1971	31423.974475003
1972	7413.78817787898
1973	12064.0816211181
1974	1446849.10454044
1975	1344057.34736914
1976	1741485.38792716
1977	1593636.86980386
1978	3130468.72222541
1979	12552391.3088864
1980	13530496.623187
1981	859386.775259298
1982	46820.9525647378
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	2564.53643170317
1994	4591.85430342501
1995	1049.65805719705
1996	7340.99032023787
1997	210053.781445021
1998	88195.5475320581
1999	4837512.92679213
2000	6436136.47302917
2001	2496619.71941799
2002	6935136.69851212
2003	10072770.4906955
2004	56.4680525002701
2005	4254148.67483764
2006	54200694.6528941
2007	102551880.792337
2008	94297418.2839206
2009	119992260.365318
2010	191276274.567138
2011	394152630.339916
2012	226896684.210612
2013	162606358.346373
2014	426560395.914691
2015	238006291.100775
2016	237429306.598665
2017	97718972.9166754
2018	77499738.747992
2019	123362173.007958
2020	151938981.140248
2021	451726062.769419