Quarter	Billions of US Dollars
2001-07-01	0.09131
2001-10-01	0.08814
2002-01-01	0.07503
2002-04-01	0.08219
2002-07-01	0.00900
2002-10-01	0.07043
2003-01-01	0.06348
2003-04-01	0.05714
2003-07-01	0.05826
2004-01-01	0.30000
2004-04-01	0.30000
2005-01-01	0.00956
2005-04-01	0.00956
2005-07-01	0.00956
2005-10-01	0.00956
2007-04-01	0.20600
2007-07-01	0.20600
2007-10-01	0.20600
2008-01-01	0.20600