Year	current US$
1977	39999.9991059303
1980	39999.9991059303
1981	90000.0035762787
1982	79999.9982118607
1983	70000.0002980232
1984	59999.9986588955
1985	59999.9986588955
1986	19999.9995529652
1987	19999.9995529652
1988	29999.999329447703
1989	29999.999329447703
1990	39999.9991059303
1991	70000.0002980232
1992	0
1993	19999.9995529652
1994	59999.9986588955
1995	50000.0007450581
1996	9999.99977648258
1997	19999.9995529652
1999	9999.99977648258