Year	current US$
1980	109999.999403954
1981	50000.0007450581
1982	19999.9995529652
1983	19999.9995529652
1984	19999.9995529652
1985	19999.9995529652
1986	19999.9995529652
1987	9999.99977648258
1988	19999.9995529652
1989	19999.9995529652
1990	29999.999329447703
1991	59999.9986588955
1992	19999.9995529652
1993	0
1994	39999.9991059303
1995	19999.9995529652
1996	9999.99977648258
1998	9999.99977648258