Quarter	Billions of US Dollars
1977-04-01	0.00990
1982-04-01	-0.01022
1984-10-01	0.20000
1987-10-01	-0.20000
2004-10-01	0.18670
2005-01-01	0.60000
2005-10-01	0.70000
2006-04-01	1.40816
2006-07-01	0.46652
2006-10-01	0.50000
2008-04-01	1.33000
2008-07-01	-0.04656
2009-01-01	0.08210
2009-07-01	1.86660
2009-10-01	0.20000
2010-01-01	0.24330
2010-10-01	-0.10000
2011-04-01	-1.46776
2011-10-01	0.99995
2012-04-01	1.75000
2013-01-01	-1.33000
2013-04-01	2.00000
2013-10-01	-0.10000
2014-04-01	0.63333
2015-01-01	-0.84333