Quarter	Billions of US Dollars
1998-04-01	0.15633
1998-10-01	-0.01762
1999-04-01	-0.12251
2006-04-01	0.01164
2006-07-01	0.01262
2006-10-01	0.02909
2007-01-01	0.03547
2007-04-01	0.02240
2007-07-01	0.02750
2007-10-01	0.00819
2008-01-01	0.06644
2008-04-01	-0.01447
2008-07-01	-0.04811
2008-10-01	-0.02934
2009-01-01	-0.06185
2009-04-01	-0.02070
2009-07-01	-0.02047
2009-10-01	0.02472
2010-01-01	-0.00273
2010-04-01	-0.01202
2010-07-01	-0.00042
2010-10-01	0.06303
2011-01-01	0.03590
2011-04-01	0.03024
2011-07-01	0.00157
2011-10-01	-0.03539
2012-01-01	-0.05480
2012-04-01	0.03427
2012-07-01	-0.00159
2012-10-01	-0.00659
2013-01-01	0.00140
2013-04-01	0.01190
2013-10-01	0.00067
2014-01-01	-0.11669
2014-04-01	-0.00545
2014-07-01	0.00228
2014-10-01	-0.00339