Year	current US$
1980	9999.99977648258
1986	19999.9995529652
1987	29999.999329447703
1988	29999.999329447703
1989	9999.99977648258
1993	19999.9995529652
1999	70000.0002980232
2000	59999.9986588955
2001	-9999.99977648258