Quarter	Billions of US Dollars
1996-01-01	-0.32000
1999-04-01	0.50000
2001-10-01	0.65000
2002-04-01	0.86392
2002-10-01	0.10000
2003-01-01	1.00000
2004-01-01	0.60000
2005-07-01	-0.36579
2007-07-01	-0.60000
2008-01-01	-0.60000
2009-04-01	-0.50000
2010-07-01	1.52435
2011-07-01	1.35171
2012-01-01	-0.75000
2012-10-01	1.50000
2013-01-01	-1.00000
2014-07-01	0.05000
2014-10-01	2.05522
2015-04-01	1.58359