Year	current US$
1990	373730002.76088756
1991	423799993.87264204
1992	440199994.0872188
1993	239590000.62942517
1994	202239999.77111834
1995	2862310091.2570953
1996	382229998.5885619
1997	188589997.2915651
1998	181509999.23795465
1999	191859999.1798401
2000	153079999.20845032
2001	144790000.08106244
2002	163120000.1239777
2003	263969996.9291687
2004	304389997.00546306
2005	7090000.15258789
2006	6940000.05722046
2007	7500000
2008	21170000.0762939
2009	12579999.923706101
2010	22530000.6866455