Year	current US$
1970	3545813.6486529
1971	1772595.65453567
1972	2053081.78953644
1973	19375943.2684971
1974	33487806.9752221
1975	4705144.98397177
1976	3673181.80387537
1977	4315207.25858275
1978	3896632.95553678
1979	9906947.01929527
1980	9491073.96933886
1981	2766384.71226777
1982	745986.619970247
1983	557002.154794071
1984	337283.031298006
1985	25634.5382403564
1986	0
1987	342484.964700619
1988	45677227.7155682
1989	46106197.282671
1990	13131283.9114921
1991	3875372.93646022
1992	5428362.61995906
1993	758255.847005898
1994	2603845.05273378
1995	1919930.80577768
1996	1506900.49582224
1997	1834529.07435849
1998	1254980.23953371
1999	1350777.87256704
2000	1141309.99233349
2001	652594.374936204
2002	1364186.85598344
2003	1007355.41785814
2004	412194.324606994
2005	423909.095132595
2006	1130976.31152525
2007	2937146.73305387
2008	4182758.37698421
2009	5528503.42029838
2010	7486086.42649714
2011	10889870.0748102
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0