Quarter	Billions of US Dollars
2002-10-01	0.10000
2003-04-01	0.10000
2004-01-01	0.20000
2004-04-01	0.30000
2004-10-01	0.40000
2005-01-01	0.20000
2005-04-01	0.60000
2005-10-01	0.35000
2006-01-01	0.29600
2006-04-01	0.45000
2006-07-01	0.83701
2006-10-01	0.26991
2007-04-01	-0.05000
2007-10-01	-0.10000
2008-01-01	-0.24600
2008-04-01	-0.30000
2008-10-01	-0.15000
2009-01-01	-0.20000
2009-10-01	-0.40000
2010-04-01	0.06075
2010-10-01	3.80000
2011-01-01	1.05400
2011-04-01	0.32300
2011-07-01	-0.70546
2011-10-01	-0.01660
2012-01-01	-0.00255
2012-04-01	0.07700
2012-07-01	0.07594
2012-10-01	1.00000
2013-01-01	0.98520
2013-04-01	2.71980
2013-07-01	0.50000
2013-10-01	0.30000
2014-04-01	0.04006
2014-07-01	0.10908
2014-10-01	1.75210
2015-01-01	-0.41380
2015-04-01	-0.50210