Year	current US$
1990	267640004.15802002
1991	1066420013.4277301
1992	2365049960.1364098
1993	2748869897.84241
1994	2177520008.08716
1995	2318390029.9072304
1996	1696100028.9917
1997	1179010009.76563
1998	1462369998.93188
1999	2243599945.06836
2000	1910569984.43604
2001	1483260069.8471098
2002	1657750017.64297
2003	1717779983.5205102
2004	2000360042.5720198