Year	current US$
1981	70000.0002980232
1982	129999.995231628
1983	280000.001192093
1984	170000.00178813902
1985	219999.998807907
1986	140000.000596046
1988	140000.000596046
1989	319999.99284744303
1990	469999.998807907
1991	140000.000596046
1992	129999.995231628
1993	129999.995231628
1994	0