Year	current US$
1977	19999.9995529652
1980	190000.0069290396
1981	140000.000596046
1982	59999.9986588955
1986	79999.9982118607
1987	79999.9982118607
1988	9999.99977648258
1989	9999.99977648258
1990	39999.9991059303
1991	9999.99977648258
1992	29999.999329447703
1993	29999.999329447703
1994	9999.99977648258
1995	209999.9971687795
1996	39999.9991059304
1997	120000.0010430812
1998	119999.9991804362
1999	69999.9984353781
2000	99999.999627471
2001	220000.00253319752
2002	219999.998807907
2003	139999.9968707562