Quarter	Billions of US Dollars
2001-07-01	0.13545
2001-10-01	0.13654
2002-01-01	0.15438
2002-04-01	0.17469
2002-07-01	0.02021
2002-10-01	0.02221
2004-04-01	0.01102
2004-07-01	0.01147
2006-07-01	0.00139
2007-07-01	0.03138
2007-10-01	0.08441
2008-01-01	0.08023
2008-04-01	0.14924
2008-07-01	0.13154
2008-10-01	0.01597
2009-01-01	0.11567
2009-04-01	0.20645
2009-07-01	0.16668
2009-10-01	0.11432
2010-01-01	0.23280
2010-04-01	0.20938
2010-07-01	0.28708
2010-10-01	0.26600
2011-01-01	0.25992
2011-04-01	0.26774
2011-07-01	0.23603
2011-10-01	0.20774