Quarter	Billions of US Dollars
2008-01-01	0.99810
2008-04-01	2.43649
2008-07-01	1.12596
2009-01-01	0.18486
2009-04-01	0.08637
2009-07-01	0.92534
2009-10-01	0.48018
2010-01-01	1.08802
2010-04-01	0.43832
2010-07-01	0.48483
2010-10-01	0.68599
2011-01-01	0.91688
2011-04-01	0.52245
2011-07-01	0.45573
2011-10-01	1.07476
2012-01-01	0.39325
2012-10-01	0.12973
2013-04-01	0.39195
2013-07-01	0.59602
2013-10-01	0.40831
2014-01-01	0.52595
2014-04-01	0.31537
2014-07-01	0.33117
2014-10-01	0.31226
2015-01-01	0.39411
2015-04-01	0.38667