Year	current US$
1972	50000.0007450581
1973	50000.0007450581
1974	460000.00834465
1975	289999.99165535
1976	109999.999403954
1977	100000.00149011599
1978	150000.005960464
1979	119999.997317791
1980	270000.010728836
1981	230000.004172325
1982	29999.999329447703
1983	29999.999329447703
1984	19999.9995529652
1985	9999.99977648258
1986	9999.99977648258
1987	9999.99977648258