Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	595231.197040528
1993	428308.151650077
1994	3985129.56370475
1995	5215472.60312176
1996	2838339.0122425
1997	2856003.40347921
1998	1051136.51678089
1999	1683595.46213697
2000	3134379.64085196
2001	3661650.92332574
2002	10877393.5615117
2003	105539.586302688
2004	0
2005	0
2006	0
2007	0
2008	0
2009	1788145.5419792
2010	126037735.997118
2011	155223016.275779
2012	70276986.8651392
2013	56202602.1462069
2014	4268983.3886976
2015	28458011.7081822
2016	0
2017	0
2018	52325780.498965
2019	130329815.17033
2020	104758273.295265
2021	448080809.990757