Year	current US$
1997	48500000
1998	12500000
1999	26700000
2000	22000000
2001	90000000
2002	118100000
2003	561630000
2004	437770000
2005	678440000
2006	1632760000
2007	3092920000
2008	1187160000
2009	680910000
2010	313970000
2011	382640000
2012	240600000