Year	current US$
1985	12039999.961853001
1986	40430000.3051758
1987	20909999.8474121
1988	19290000.915527303
1989	24329999.9237061
1990	29979999.5422363
1991	24969999.3133545
1992	29979999.5422363
1993	24860000.6103516
1994	18260000.2288818
1995	25799999.237060502
1996	19530000.6866455
1997	25069999.6948242
1998	11260000.2288818
1999	-7380000.11444092