Year current US$ 1991 140000.000596046 1992 280000.001192093 1993 250000 1994 29999.999329447703 1995 209999.993443489 1996 1389999.98569489 1997 50000.0007450581 2001 170000.00178813902 2002 159999.99642372102 2003 29999.999329447703 2004 9999.99977648258