Year	current US$
1970	22370561.7928155
1971	16967740.5516069
1972	17825515.595861
1973	78242344.1825489
1974	110279664.254724
1975	25168726.4974136
1976	44112509.1761925
1977	44230427.1146404
1978	32638020.417644
1979	81758162.9619779
1980	75328212.0709893
1981	41450769.8095173
1982	31664198.553468
1983	33490529.077231
1984	25627115.7673067
1985	28803632.7067999
1986	17711373.6023484
1987	39397120.1635953
1988	310571377.959989
1989	335481757.837899
1990	151127074.509978
1991	57886864.3321643
1992	50240760.8640391
1993	55021413.6143136
1994	90968704.2012658
1995	121472348.968772
1996	30869421.6192997
1997	111329611.408054
1998	58319097.891386
1999	47958287.5654216
2000	72682093.2626344
2001	47235008.2190308
2002	19658652.3827612
2003	24516509.1869411
2004	120411547.399463
2005	254943378.930558
2006	629450629.743123
2007	828820920.32509
2008	627876607.147412
2009	283952279.257471
2010	1806433665.71114
2011	2587581735.40985
2012	700036380.099973
2013	476610111.588812
2014	356304959.619487
2015	319234055.192496
2016	390937140.370974
2017	704500416.023853
2018	823313188.859211
2019	548810250.150519
2020	608159937.903866
2021	3633754034.01103