Year	current US$
1990	4299999.922513962
1991	157899993.89648402
1992	34999999.59766868
1993	16000000.0745058
1994	970000.0099837775
1995	2159999.9815225606
1996	8550000.015646217
1997	9939999.982714659
1998	1260000.037029381
1999	4260000.050067902
2000	2799999.998882412
2001	3219999.939203266
2002	2750000.0204890957
2003	3619999.9414384323
2004	5210000.023245815
2005	19999.9995529652
2006	1740000.0095367401
2007	500000
2008	319999.99284744303
2009	39999.9991059303
2010	9999.99977648258