Year	current US$
1990	-4204000852.58478
1993	1890197268.50275
1994	3448158377.73439
1995	6504257733.11042
1996	15992013019.6523
1997	11347606367.7656
1998	7522136187.45284
1999	14799851335.4571
2000	10417433160.2851