Year	current US$
1972	19999.9995529652
1973	19999.9995529652
1974	19999.9995529652
1975	19999.9995529652
1976	50000.0007450581
1977	50000.0007450581
1978	59999.9986588955
1979	100000.00149011599
1980	9999.99977648258
1981	29999.999329447703
1985	100000.00149011599
1986	70000.0002980232
1987	90000.0035762787
1988	100000.00149011599
1989	100000.00149011599
1990	219999.998807907
1991	9999.99977648258
1992	19999.9995529652
1996	29999.999329447703