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	0
1993	0
1994	0
1995	0
1996	31946.8791620288
1997	52767.0627152434
1998	1257978.32199585
1999	1679056.73441468
2000	2140809.49742039
2001	825956.891527128
2002	2302277.3165238
2003	3428473.65293978
2004	6432250.36673542
2005	0
2006	0
2007	0
2008	0
2009	9147073.98408352
2010	14110236.0695554
2011	37317065.5099933
2012	47315777.3637932
2013	29164088.7900286
2014	27372807.5392075
2015	12472110.6093213
2016	4130941.71288505
2017	3714900.04768024
2018	0
2019	72059240.8933016
2020	77409924.2831603
2021	789543828.030054