Year	current US$
1972	209999.993443489
1973	270000.010728836
1974	449999.988079071
1975	500000
1976	379999.99523162795
1977	500000
1978	400000.00596046395
1979	259999.990463257
1980	100000.00149011599
1981	50000.0007450581
1982	29999.999329447703
1983	19999.9995529652
1984	50000.0007450581
1985	19999.9995529652
1986	39999.9991059303
1987	50000.0007450581
1988	19999.9995529652
1989	9999.99977648258