Quarter	Billions of US Dollars
2011-07-01	1.00000
2011-10-01	1.00000
2012-01-01	1.00000
2012-04-01	2.76991
2012-07-01	1.76991
2012-10-01	1.76991
2013-01-01	1.76991
2013-04-01	3.00000
2013-07-01	3.00000
2013-10-01	3.00000
2014-01-01	3.00000
2014-10-01	0.50000
2015-01-01	0.50000
2015-04-01	0.50000