Quarter	Billions of US Dollars
2011-07-01	0.18527
2011-10-01	0.05156
2012-01-01	0.18126
2012-04-01	0.22461
2012-07-01	0.89526
2012-10-01	0.18924
2013-01-01	1.68021
2013-04-01	0.50632
2013-07-01	-1.07405
2013-10-01	-0.15655
2014-01-01	-2.14193
2014-04-01	-0.68759