Year	current US$
1970	16485034.790851
1971	18818627.2097955
1972	23114622.1635639
1973	37497297.96941
1974	38178628.1845749
1975	51852893.1539171
1976	48678463.3029501
1977	64384586.6710803
1978	69379854.499365
1979	121792676.182182
1980	127497617.399089
1981	117277777.963825
1982	161234551.151703
1983	108229139.680861
1984	70539329.9877859
1985	78261391.5945053
1986	91965313.9021094
1987	119117943.838231
1988	111665722.292968
1989	135418928.559033
1990	146106647.738545
1991	135617740.095459
1992	156777300.882767
1993	74709195.0374782
1994	189243052.650719
1995	289046505.209936
1996	286886542.8525
1997	266681851.705068
1998	234062334.526592
1999	68437519.764457
2000	64837149.4051929
2001	71907773.4822654
2002	71375435.6856863
2003	77464324.7269152
2004	84248393.1433698
2005	86771517.5690727
2006	123536368.697489
2007	150354995.885534
2008	165224860.423128
2009	173340345.705267
2010	303500674.687798
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0