Year current US$ 1979 1330000.04291534 1980 3009999.99046326 1981 29999.999329447703 1983 2059999.94277954 1984 1740000.0095367401 1985 1350000.02384186 1986 870000.004768372 1987 1669999.95708466 1988 3759999.99046326 1989 1059999.9427795399 1990 7429999.82833862 1991 12199999.8092651 1992 9939999.5803833 1993 400000.00596046395 1994 100000.00149011599 1995 79999.9982118607 1996 90000.0035762787 1997 90000.0035762787 1998 59999.9986588955