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	0.47245
2005-07-01	0.26457
2006-01-01	0.02823
2006-04-01	0.51867
2006-07-01	0.00442
2006-10-01	-0.57690
2007-01-01	0.21000
2007-04-01	2.09587
2007-07-01	-0.32567
2007-10-01	0.02444
2008-01-01	-0.25099
2008-04-01	0.09240
2008-07-01	0.00269
2008-10-01	1.05275
2009-04-01	4.14860
2009-07-01	0.83098
2009-10-01	-0.01095
2010-01-01	1.98888
2010-04-01	-0.91454
2010-07-01	-0.07993
2010-10-01	0.04970
2011-01-01	-1.12289
2011-04-01	1.57374
2011-07-01	2.80423
2011-10-01	1.30567
2012-01-01	-7.29382
2012-04-01	0.19005
2012-07-01	-5.62894
2012-10-01	5.23104
2013-01-01	0.01396
2013-04-01	-0.13486
2013-07-01	-0.08000
2013-10-01	-3.81292
2014-01-01	4.19253
2014-04-01	1.18975
2014-07-01	-1.03237
2014-10-01	-0.04372
2015-01-01	0.13290
2015-04-01	1.06680