Year	current US$
1991	15369999.8855591
1992	104370002.746582
1993	42310001.373291
1994	43810001.373291
1995	58049999.237060495
1996	59369998.9318848
1997	65910003.662109405
1998	90989997.8637695
1999	83620002.746582
2000	63830001.8310547
2001	68500000
2002	54409999.8474121
2003	84300003.0517578
2004	135429992.67578098