Year current US$ 1990 19999.9995529652 1991 19999.9995529652 1992 19999.9995529652 1996 19999.9995529652 1997 19999.9995529652 1999 19999.9995529652 2000 19999.9995529652 2001 29999.999329447703 2002 29999.999329447703 2003 9999.99977648258 2004 79999.9982118607