Quarter	Billions of US Dollars
1997-07-01	0.15000
1998-01-01	0.15000
1998-04-01	0.16856
1999-04-01	-0.10000
2000-07-01	-0.15000
2001-01-01	-0.15000
2001-04-01	-0.05577
2001-10-01	0.15000
2002-01-01	0.52500
2002-04-01	0.35000
2002-10-01	1.80450
2003-01-01	2.15000
2003-04-01	0.15000
2003-07-01	0.12500
2003-10-01	0.07655
2004-01-01	0.63545
2004-04-01	0.62995
2004-07-01	0.56500
2004-10-01	0.38485
2005-01-01	0.08370
2005-04-01	0.04000
2005-07-01	-0.10350
2005-10-01	0.77075
2006-01-01	-0.17802
2006-04-01	-0.36179
2006-07-01	0.32850
2006-10-01	1.50670
2007-01-01	1.20640
2007-04-01	2.95140
2007-07-01	0.00408
2007-10-01	-0.33057
2008-01-01	0.47344
2008-04-01	1.33914
2008-07-01	3.50000
2008-10-01	0.07264
2009-01-01	-0.82053
2009-04-01	2.25697
2009-07-01	0.50549
2009-10-01	-1.73683
2010-01-01	0.15000
2010-04-01	2.26036
2010-07-01	-0.15846
2010-10-01	1.05840
2011-01-01	1.83272
2011-04-01	0.68233
2011-07-01	-0.75000
2011-10-01	1.13238
2012-01-01	-0.50000
2012-04-01	0.24890
2012-07-01	3.52352
2012-10-01	3.00851
2013-01-01	2.46338
2013-04-01	6.75087
2013-07-01	-1.38234
2013-10-01	1.87295
2014-01-01	-0.63389
2014-04-01	-0.41642
2014-07-01	-0.44850
2014-10-01	1.27478
2015-01-01	-0.35000