Quarter	Billions of US Dollars
2007-07-01	0.01184
2007-10-01	0.04852
2008-01-01	-3.35884
2008-07-01	-0.01096
2008-10-01	-0.03923
2009-01-01	-0.80362
2011-01-01	0.33805
2011-04-01	0.11225
2011-07-01	-0.00115
2012-01-01	-0.30336
2012-04-01	-0.09276
2013-01-01	0.27926
2013-04-01	0.09655
2013-07-01	-0.04257
2013-10-01	0.03626
2014-01-01	-0.14771
2014-04-01	0.22556
2014-07-01	0.03663
2014-10-01	-0.01573
2015-01-01	-0.21129
2015-04-01	-0.11343