Quarter	Billions of US Dollars
2005-04-01	0.02445
2005-07-01	0.05493
2005-10-01	0.64017
2006-01-01	0.06010
2006-04-01	0.07701
2006-07-01	0.09155
2006-10-01	0.10688
2007-01-01	0.08734
2007-04-01	0.08176
2010-04-01	0.00054
2011-01-01	0.02045
2011-07-01	2.07144
2011-10-01	0.69658
2012-01-01	4.99619
2012-04-01	1.08821
2012-07-01	2.45233
2012-10-01	0.79206
2013-01-01	2.24805
2013-04-01	0.30006
2013-07-01	-1.60919
2013-10-01	-0.90921
2014-01-01	-2.61907
2014-04-01	-1.00579
2014-07-01	-0.32936
2014-10-01	-0.20105
2015-01-01	-0.11271
2015-04-01	-0.33933