Quarter	Billions of US Dollars
2005-04-01	0.11593
2005-07-01	0.26684
2005-10-01	0.05700
2006-01-01	0.04823
2006-04-01	0.00450
2006-07-01	0.14269
2006-10-01	0.06250
2007-01-01	0.19000
2007-07-01	0.07061
2007-10-01	0.02444
2008-01-01	-0.15099
2008-04-01	0.35791
2008-07-01	-0.43026
2009-04-01	1.55018
2010-01-01	-0.10034
2010-04-01	0.03336
2010-07-01	-0.08000
2010-10-01	0.05000
2011-01-01	-1.35494
2011-04-01	0.30000
2011-07-01	-0.30000
2011-10-01	-0.04200
2012-04-01	-0.04200
2012-07-01	0.04000
2012-10-01	0.05900
2013-01-01	0.02000
2013-04-01	-0.06820
2013-10-01	0.02200
2014-01-01	1.21534
2014-04-01	0.04673
2014-07-01	-0.02500
2014-10-01	-0.02200
2015-01-01	0.10290
2015-04-01	-0.03797