Year	current US$
1969	29999.999329447703
1973	19999.9995529652
1977	79999.9982118607
1978	19999.9995529652
1982	9999.99977648258
1983	9999.99977648258
1984	39999.9991059303
1985	39999.9991059303
1986	189999.99761581398
1987	39999.9991059303
1992	29999.999329447703
1993	29999.999329447703
1994	-9999.99977648258
1995	50000.0007450581
1996	39999.9991059303
1997	19999.9995529652