Quarter	Billions of US Dollars
2011-10-01	0.21742
2012-01-01	0.23868
2012-04-01	0.21330
2012-07-01	0.22641
2014-07-01	1.00000
2014-10-01	1.00000
2015-01-01	1.00000
2015-04-01	1.00000