Quarter	Billions of US Dollars
2007-07-01	0.04274
2007-10-01	0.04442
2008-01-01	0.05031
2008-04-01	0.04913
2009-01-01	0.60000
2009-04-01	0.60000
2009-07-01	0.60000
2009-10-01	1.30000
2010-01-01	0.70000
2010-04-01	2.09881
2010-07-01	2.14356
2010-10-01	1.43426
2011-01-01	1.46173
2012-10-01	0.10000
2013-01-01	0.10000
2013-04-01	0.10000
2013-07-01	0.10000
2014-01-01	0.84333
2014-04-01	0.84333
2014-07-01	0.84333
2014-10-01	1.44333
2015-01-01	0.60000
2015-04-01	0.60000