Year	current US$
1990	630688095.466828
1991	855500000
1992	1048680422.08324
1993	1350910335.74437
1994	1060920000
1995	1217644710.57884
1996	1026207584.83034
1997	1095856033.07393
1998	605269228.846154
1999	659573643.410853
2000	-319447351.894494
2001	908435487.222107
2002	903599023.993493