Year	current US$
1977	70000.0002980232
1980	19999.9995529652
1984	9999.99977648258
1985	109999.999403954
1986	70000.0002980232
1987	79999.9982118607
1988	50000.0007450581
1989	9999.99977648258
1990	19999.9995529652
1991	39999.9991059303
1994	0
1998	19999.9995529652
2002	29999.999329447703
2003	19999.9995529652