Quarter	Billions of US Dollars
2004-04-01	0.250
2004-07-01	0.250
2004-10-01	0.250
2005-01-01	0.250
2005-04-01	0.250
2005-07-01	0.250
2005-10-01	0.250
2006-01-01	0.250
2006-04-01	0.250
2006-07-01	0.250
2006-10-01	0.275
2007-01-01	0.275
2007-04-01	0.290
2007-07-01	0.290
2007-10-01	0.290
2008-01-01	0.290
2008-04-01	0.290
2008-07-01	0.290
2008-10-01	0.290
2009-01-01	0.290
2009-04-01	0.040
2009-07-01	0.040
2009-10-01	0.040
2010-01-01	0.040
2010-04-01	0.040
2010-07-01	0.040
2010-10-01	0.040
2011-01-01	0.040
2011-04-01	0.040
2011-07-01	0.040
2011-10-01	0.015
2012-01-01	0.015
2013-01-01	0.500
2013-04-01	0.500
2013-07-01	0.500
2013-10-01	0.500
2014-01-01	0.500
2014-04-01	0.500
2014-07-01	0.500
2014-10-01	1.500
2015-01-01	1.500
2015-04-01	1.800