Year	constant 2021 US$
1990	3724080078.125
1991	10966839843.75
1992	8864129882.8125
1993	9387870117.1875
1994	10554769531.25
1995	11607149414.0625
1996	8089439941.40625
1997	9110940429.6875
1998	11249099609.375
1999	12593469726.5625
2000	13253179687.5
2001	10642490234.375
2002	10184530273.4375
2003	9950919921.875
2004	10914259765.625