Year	current US$
1980	129999.995231628
1981	389999.98569488496
1982	379999.99523162795
1983	259999.990463257
1984	119999.997317791
1985	119999.997317791
1986	50000.0007450581
1987	39999.9991059303
1988	19999.9995529652
1989	19999.9995529652
1991	70000.0002980232
1992	0
1993	-9999.99977648258
1997	29999.999329447703
1998	9999.99977648258
1999	9999.99977648258
2001	9999.99977648258