Year	current US$
1974	240000.00394880757
1975	120000.0029057264
1976	29999.999329447717
1977	19999.99955296512
1979	19999.9995529652
1980	19999.9995529652
1990	259999.990463257
1991	4979999.959468851
1992	21089999.9141693
1994	1679999.9624490691
1995	9439999.908208849
1996	13690000.176429749
1997	24740000.05424021
1998	35579999.62195755
1999	54789999.37325719
2000	37440001.01089482
2001	52070000.64849852
2002	34870000.36239623
2003	36589999.31812289
2004	20139999.74727631