Quarter	Billions of US Dollars
2010-07-01	0.0009
2010-10-01	0.0080
2011-01-01	0.2148
2011-04-01	0.6207
2011-07-01	1.2685
2011-10-01	2.0534
2012-01-01	3.2148
2012-04-01	3.1437
2012-07-01	3.3379
2012-10-01	4.1435
2013-01-01	8.2275
2013-04-01	12.5504
2013-07-01	13.7560
2013-10-01	17.2466
2014-01-01	26.2517
2014-04-01	29.8602
2014-07-01	28.2777
2014-10-01	25.4693
2015-01-01	19.8929
2015-04-01	19.1099