Quarter	Billions of US Dollars
1997-10-01	0.01532
1998-01-01	0.01532
1998-04-01	0.01569
1998-07-01	0.01569
2008-07-01	0.07500
2008-10-01	0.07500
2009-01-01	0.07500
2009-04-01	0.21500
2009-07-01	0.14000
2009-10-01	0.14000
2010-01-01	0.14000
2010-07-01	0.15000
2010-10-01	0.15000
2011-01-01	0.15000
2011-04-01	0.15000
2011-07-01	0.02000
2011-10-01	0.02000
2012-01-01	0.02000
2012-04-01	0.02000