Year	current US$
1981	119999.997317791
1982	90000.0035762787
1983	119999.997317791
1984	39999.9991059303
1985	129999.995231628
1986	90000.0035762787
1987	70000.0002980232
1991	19999.9995529652
1992	150000.005960464
1993	39999.9991059303