Quarter	Billions of US Dollars
2006-10-01	0.09878
2007-01-01	0.09989
2007-04-01	0.10129
2007-07-01	0.10634
2007-10-01	0.11041
2008-01-01	0.11859
2008-04-01	0.11823
2008-07-01	0.39333
2008-10-01	0.38272
2009-01-01	0.36597
2009-04-01	0.28268
2009-07-01	0.29286
2009-10-01	0.28812
2010-01-01	0.26958
2010-04-01	0.24542