Year	current US$
1977	19999.9995529652
1984	29999.999329447703
1985	39999.9991059303
1986	119999.997317791
1987	59999.9986588955
1988	39999.9991059303
1989	239999.994635582
1990	490000.009536743
1991	1029999.97138977
1992	899999.976158142
1993	899999.976158142
1994	870000.004768372
1995	860000.014305115
1996	1000000
1997	879999.995231628
1998	709999.978542328
1999	639999.985694885
2004	19999.9995529652