Quarter	Billions of US Dollars
1994-01-01	0.01500
1994-07-01	-0.01500
1997-01-01	0.10000
1997-07-01	0.30000
1998-10-01	0.20000
2003-10-01	-0.22197
2004-10-01	0.70000
2005-10-01	-0.20000
2006-04-01	0.20000
2007-01-01	-0.10000
2007-07-01	-0.07803
2009-07-01	0.10000
2009-10-01	0.40000
2010-04-01	0.50000
2010-07-01	1.20040
2010-10-01	0.85681
2011-01-01	0.50000
2011-07-01	-0.20000
2011-10-01	0.13500
2012-01-01	0.75000
2012-04-01	-0.63500
2012-07-01	1.48756
2012-10-01	0.03423
2013-01-01	1.95900
2013-04-01	1.04819
2013-07-01	0.66547
2013-10-01	0.47218
2014-01-01	0.52191
2014-04-01	1.23209
2014-07-01	0.69793
2014-10-01	-0.08335
2015-01-01	0.00014
2015-04-01	0.31789