Year current US$ 1992 29999.999329447703 1993 170000.00178813902 1994 310000.002384186 1995 330000.013113022 1996 159999.99642372102 1997 250000 1998 59999.9986588955 1999 109999.999403954 2000 100000.00149011599 2001 50000.0007450581 2002 50000.0007450581