Year current US$ 1991 109999.999403954 1992 170000.00178813902 1993 140000.000596046 1994 150000.005960464 1995 170000.00178813902 1996 239999.994635582 1997 200000.00298023198 1998 409999.99642372096 1999 119999.997317791 2000 129999.995231628 2001 490000.009536743 2002 360000.01430511504 2003 230000.004172325 2004 790000.021457672