Quarter	Billions of US Dollars
2010-07-01	0.0009
2010-10-01	0.0080
2011-01-01	0.2133
2011-04-01	0.4675
2011-07-01	0.7246
2011-10-01	1.0569
2012-01-01	1.7952
2012-04-01	0.8120
2012-07-01	1.4467
2012-10-01	2.0010
2013-01-01	5.9043
2013-04-01	5.1128
2013-07-01	3.2844
2013-10-01	5.6515
2014-01-01	15.0216
2014-04-01	10.4591
2014-07-01	4.8011
2014-10-01	4.9358
2015-01-01	7.3300
2015-04-01	8.2650