Year current US$ 1991 22489999.7711182 1992 899999.976158142 1993 1169999.95708466 1994 340000.00357627904 1995 230000.004172325 1996 560000.002384186 1997 1990000.0095367401 1998 479999.989271164 1999 600000.023841858 2000 6170000.07629395 2001 500000 2003 1399999.97615814 2004 990000.009536743