Year	current US$
1997	15800000.1907349
1998	13199999.8092651
1999	13899999.6185303
2000	17000000
2001	14699999.8092651
2002	16799999.237060502
2003	16700000.7629395
2004	19000000
2005	21000000
2006	23000000
2007	25000000
2008	27000000