Year	constant 2021 US$
1990	1016280006.4086901
1991	4482300018.31055
1992	5301149997.71118
1993	6811699954.98657
1994	6603799842.83447
1995	6114799804.6875
1996	5235369899.749761
1997	4550350067.13867
1998	5671650043.48755
1999	6623659942.62695
2000	5619520065.30762
2001	4118850021.3623
2002	4445639915.4663105
2003	4056280014.03809
2004	4142049949.646