Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	40198.7322729754
1980	150726.902916472
1981	65149.0090127913
1982	45096.3322729826
1983	118246.59881793
1984	264225.34253674
1985	197141.169057089
1986	188750.428328002
1987	359959.535690169
1988	529865.529112998
1989	148603.312402882
1990	126906.256779072
1991	198794.050778844
1992	63202.7702657801
1993	66045.2999333062
1994	473061.799860218
1995	102218.002985801
1996	244630.645229396
1997	154063.572782649
1998	69998.1250452313
1999	37530.903098714
2000	18073.459130211
2001	27988.4198282346
2002	50498.9140737064
2003	18456.2664764744
2004	6091.94902894793
2005	20949.2546367043
2006	38868.9814862766
2007	43899.1465049863
2008	238024.455673146
2009	411623.040535953
2010	545537.494023545
2011	831634.154463086
2012	812583.45552832
2013	597388.088902397
2014	487943.107082394
2015	368025.171535918
2016	473101.425459798
2017	754076.142998352
2018	987166.948821929
2019	1235583.64681123
2020	3227322.22997879
2021	14979742.7012482