Year	current US$
1970	0
1971	19999.9995529652
1972	279999.990016222
1973	439999.995753169
1974	370000.00290572597
1975	99999.99776482579
1976	89999.9979883432
1977	39999.9991059303
1978	80000.0000745058
1979	29999.999329447703
1980	249999.99627471
1981	79999.9982118607
1982	159999.99642372102
1983	69999.9984353781
1984	69999.9984353781
1985	70000.0002980232
1986	1059999.99120831
1987	179999.995976686
1988	899999.992921948
1989	769999.990239739
1990	22810000.4438311
1991	87799996.0258603
1992	13169999.9067932
1993	15670000.0539422
1994	12690000.2490729
1995	20050000.5111098
1996	11740000.1492351
1997	25199999.7086823
1998	20540000.1145899
1999	8370000.21897256
2000	8280000.0049173795
2001	9169999.89934266
2002	5789999.95812774
2003	8509999.94203448
2004	4120000.04947186
2005	-4750000.00372529
2006	-1239999.987185
2007	230000.000447035
2008	1129999.99150634
2009	910000.003874302
2010	1589999.9961257002
2011	520000.007003546
2012	1079999.9702721802
2013	1020000.0051408999
2014	660000.005736947
2015	379999.991506338
2016	350000.010803342
2017	90000.0035762787
2018	59999.9986588955
2019	29999.999329447703
2020	0
2021	0