Quarter	Billions of US Dollars
2011-07-01	0.18035
2011-10-01	0.22846
2012-01-01	0.41042
2012-04-01	0.62855
2012-07-01	1.56188
2012-10-01	1.76785
2013-01-01	3.35875
2013-04-01	3.92279
2013-07-01	2.94755
2013-10-01	2.84774
2014-01-01	0.69140