Quarter	Billions of US Dollars
1990-04-01	0.15000
1996-10-01	0.08539
1997-04-01	0.30000
1998-01-01	0.10000
1998-07-01	0.39120
1999-01-01	-0.03145
1999-04-01	0.28289
1999-07-01	0.04209
1999-10-01	0.00071
2000-01-01	-0.01787
2000-04-01	0.01724
2000-07-01	0.00047
2000-10-01	0.00630
2001-01-01	-0.00837
2001-04-01	0.23364
2001-07-01	0.08183
2001-10-01	0.17040
2002-01-01	0.47439
2002-04-01	-0.44928
2002-07-01	0.00229
2002-10-01	-0.00318
2003-01-01	0.00330
2003-04-01	0.00018
2003-07-01	0.00378
2003-10-01	0.58684
2004-01-01	0.00308
2004-04-01	-0.00264
2004-07-01	0.98615
2004-10-01	0.03517
2005-01-01	-0.06787
2005-04-01	0.61902
2005-07-01	0.02373
2006-01-01	0.02823
2006-04-01	0.51867
2006-07-01	0.00442
2006-10-01	-0.17690
2007-01-01	0.21000
2007-04-01	3.09017
2007-07-01	-0.32567
2007-10-01	0.02444
2008-01-01	-0.25099
2008-04-01	0.79240
2008-07-01	0.05294
2008-10-01	-0.41814
2009-04-01	2.74062
2009-07-01	0.71517
2009-10-01	-0.36302
2010-01-01	1.89676
2010-04-01	-1.23897
2010-07-01	-0.07993
2010-10-01	1.40809
2011-01-01	0.49354
2011-04-01	1.12374
2011-07-01	1.53131
2011-10-01	1.30567
2012-01-01	-5.54256
2012-04-01	0.02909
2012-07-01	-6.22894
2012-10-01	5.20104
2013-01-01	0.27500
2013-04-01	0.09014
2013-07-01	-0.05000
2013-10-01	-3.51292
2014-01-01	2.79363
2014-04-01	0.94622
2014-07-01	-1.72760
2014-10-01	0.08100
2015-01-01	-0.54054
2015-04-01	1.47623