Year	current US$
1990	6840000.15258789
1991	137449996.94824204
1992	341889999.3896485
1993	188340003.9672852
1994	246389999.38964838
1995	398490001.67846733
1996	319869998.93188477
1997	363330001.831055
1998	508360008.2397468
1999	686969989.7766109
2000	419629997.25341845
2001	517649990.0817876
2002	448719997.4060053
2003	810130004.8828136
2004	909679990.2915962