Year	current US$
1970	19999.9995529652
1971	29999.999329447703
1973	270000.010728836
1974	129999.99709427358
1975	310000.002384186
1976	109999.9994039535
1977	279999.993741512
1978	1009999.990463257
1979	289999.99910593004
1980	770000.0107288361
1981	729999.9743700019
1982	1019999.9809265139
1983	840000.003576278
1984	469999.998807907
1985	79999.9982118607
1986	579999.983310699
1987	530000.0049173828
1989	19999.9995529652
1990	1039999.96185303
1991	70000.0002980232
1992	1379999.99523163
2015	387017.011642456