Quarter	Billions of US Dollars
1982-10-01	0.01200
1992-10-01	-0.02439
1997-04-01	0.05000
1998-10-01	0.06500
2000-04-01	-0.05000
2002-07-01	0.35000
2004-10-01	0.10000
2007-10-01	0.50000
2008-10-01	-0.06500
2009-10-01	0.40000
2010-10-01	1.00000
2011-07-01	1.00000
2012-04-01	0.50000
2012-07-01	1.00000
2012-10-01	-0.50000
2013-04-01	0.50000
2013-07-01	0.75000
2013-10-01	0.10000
2014-01-01	1.00000
2014-04-01	0.67500
2014-07-01	0.25000
2015-01-01	-0.50000
2015-04-01	0.65000