Year	constant 2021 US$
1990	2148060058.59375
1991	4344709960.9375
1992	2122270019.53125
1993	1602540039.0625
1994	2815330078.125
1995	4707279785.15625
1996	1588020019.53125
1997	1327030029.29688
1998	1368819946.28906
1999	1890979980.46875
2000	2494800048.82813
2001	1736099975.58594
2002	1485020019.53125
2003	1639160034.17969
2004	1869339965.82031