Year	constant 2021 US$
1990	3724080070.49561
1991	10966840011.596699
1992	8864130001.068121
1993	9387869998.931879
1994	10554769927.978498
1995	11607149551.3916
1996	8023779926.30005
1997	7171930091.85791
1998	9391649974.823
1999	11103449928.2837
2000	11149400136.5267
2001	9343010015.48767
2002	8025939937.43137
2003	8334080105.580389
2004	8957449945.91177