Year	current US$
1990	1320280029.29688
1991	2507260009.76563
1992	1435530029.29688
1993	1071560058.59375
1994	1809520019.53125
1995	3788879882.8125
1996	1164369995.11719
1997	860479980.46875
1998	875330017.089844
1999	1179150024.41406
2000	1393410034.17969
2001	958489990.234375
2002	876440002.441406
2003	1185640014.64844
2004	1520160034.17969