Year	current US$
1976	289999.99165535
1979	9999.99977648258
1980	129999.995231628
1981	119999.997317791
1982	159999.99642372102
1983	100000.00149011599
1984	129999.995231628
1985	70000.0002980232
1986	140000.000596046
1987	90000.0035762787
1988	600000.023841858
1991	29999.999329447703
1992	400000.00596046395
1993	150000.005960464
1999	29999.999329447703