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	3812480.14961131
1984	3680667.62151974
1985	4511678.73030273
1986	4201079.5483103
1987	9584136.418289
1988	16216886.6960055
1989	14526692.2735839
1990	10072633.6434213
1991	3373105.27927152
1992	7310799.32275993
1993	3272770.71184213
1994	2734754.79120006
1995	0
1996	0
1997	1256497.29154722
1998	459805.638636989
1999	43732.4119612202
2000	23540.889706026
2001	2744.9874105209
2002	78712.994052754
2003	0
2004	972526.475177938
2005	2078246.86157875
2006	1737818.93472569
2007	1368023.16921785
2008	568646.664573673
2009	306704.861862259
2010	5001752.49464991
2011	62612607.7922868
2012	44241430.8032818
2013	21615040.1779218
2014	23783918.3778519
2015	8138052.70955935
2016	697799.056048933
2017	37518.3367228467
2018	0
2019	0
2020	0
2021	0