Year	current US$
1990	889999.985694885
1991	263119995.117188
1992	73889999.3896484
1993	46020000.4577637
1994	102760002.13623
1995	58150001.5258789
1996	107209999.084473
1997	140089996.33789098
1998	92800003.0517578
1999	120970001.22070299
2000	95339996.3378906
2001	165039993.28613302
2002	129300003.051758
2003	179949996.94824198
2004	354670013.42773396