Quarter	Billions of US Dollars
1993-10-01	0.04420
1996-07-01	0.00991
1997-04-01	0.23435
1999-07-01	-0.00663
2002-04-01	-0.12259
2004-01-01	0.00493
2005-10-01	0.02967
2006-01-01	0.00480
2006-04-01	0.00069
2006-07-01	0.00072
2006-10-01	0.00076
2007-01-01	0.00079
2007-04-01	0.10880
2007-07-01	0.03981
2007-10-01	0.07054
2008-01-01	0.05316
2008-04-01	-0.02526
2008-07-01	-0.01210
2008-10-01	0.00014
2009-01-01	-0.01024
2009-04-01	0.00098
2009-07-01	0.00099
2009-10-01	0.00104
2010-01-01	0.00108
2010-04-01	0.00616
2010-07-01	1.06482
2010-10-01	0.71985
2011-01-01	1.25104
2011-04-01	-0.00239
2011-07-01	0.02339
2011-10-01	0.26117
2012-04-01	-0.11689
2012-10-01	0.67738
2013-01-01	-0.04913
2013-04-01	-0.54329
2013-07-01	0.51964
2014-01-01	0.00680
2014-04-01	0.00340
2015-04-01	-0.00515