Year	current US$
1970	43326483.1653679
1971	43990686.7922699
1972	28617031.0610245
1973	25433011.8763729
1974	19164333.0956752
1975	39891806.8694566
1976	54798380.7532775
1977	44352511.1908532
1978	0
1979	16733173.097902
1980	17320358.8771867
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	193935134.904319
1989	259675404.022188
1990	45018002.8307776
1991	187926667.124967
1992	108750640.368284
1993	59067341.6043668
1994	95156311.9288783
1995	245007687.268692
1996	186971304.025767
1997	184832363.735503
1998	8044800.75166976
1999	34427016.4955781
2000	229397608.662091
2001	66099737.3594115
2002	81641269.3334633
2003	209428707.342172
2004	370073265.223115
2005	263828110.802319
2006	449211755.564451
2007	1272534623.16128
2008	82744483.2750426
2009	0
2010	136849948.712945
2011	115866018.783967
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	893482205.999666