Year	current US$
1970	12902319.4435267
1971	11434620.4515428
1972	14097801.0014512
1973	51621778.9355735
1974	27114536.9239856
1975	8976936.8469374
1976	11135393.644772
1977	11270399.09823
1978	10136603.2193242
1979	23202974.2271716
1980	40097794.0715202
1981	24495154.3151558
1982	13114909.5688372
1983	18737778.5136241
1984	6801426.23402377
1985	6975741.37051591
1986	2909685.2595169
1987	5438369.40337237
1988	8022295.0599447
1989	6731866.47966105
1990	4570901.19104235
1991	4859709.92707937
1992	2270759.38725936
1993	26564.9516881097
1994	49085.7569933798
1995	83349.1794796588
1996	68542.3113482692
1997	61489.1789201817
1998	285569.342697134
1999	215728.146628261
2000	627268.353156133
2001	364221.101024257
2002	258969.606448935
2003	176556.258928051
2004	330275.00314541
2005	748675.863115544
2006	1479841.20833042
2007	2844451.35784675
2008	4252169.04026236
2009	813874.515227128
2010	3463268.31848306
2011	5967169.86093507
2012	4699374.47562549
2013	4566953.42143823
2014	2710419.00803691
2015	0
2016	0
2017	0
2018	0
2019	1133445565.07558
2020	1184567183.52845
2021	0