Year	current US$
1975	19999.9995529652
1976	9999.99977648258
1977	9999.99977648258
1978	9999.99977648258
1979	5530000.20980835
1980	119999.997317791
1981	-4300000.19073486
1982	150000.005960464
1983	219999.998807907
1984	259999.990463257
1985	239999.994635582
1986	29950000.762939498
1987	109319999.69482401
1988	-16219999.3133545
1989	-9729999.54223633
1990	349999.99403953605
1991	-14560000.4196167
1992	-13770000.4577637
1993	-12970000.2670288
1994	-13149999.6185303
1995	310000.002384186
1996	2230000.01907349
1997	400000.00596046395
1998	930000.007152557
1999	1039999.96185303
2000	649999.976158142
2001	529999.971389771
2002	500000
2003	1080000.04291534
2004	1029999.97138977