Year current US$ 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 18050000.1907349 1997 17289999.365806602 1998 85250003.54647641 1999 17349999.666214 2000 570790010.57148 2001 585819978.445768 2002 677579997.65873 2003 534869966.11952806 2004 1064110025.9944801