Quarter	Billions of US Dollars
1998-04-01	0.00020
1998-10-01	0.04577
1999-04-01	-0.03268
2002-07-01	0.00596
2002-10-01	-0.00011
2004-01-01	0.04711
2004-04-01	-0.02715
2004-07-01	-0.02571
2005-01-01	0.03592
2005-10-01	-0.03484
2006-01-01	0.06747
2006-04-01	0.11939
2006-07-01	0.02230
2006-10-01	0.06416
2007-01-01	-0.18799
2007-04-01	-0.01442
2007-07-01	0.00717
2007-10-01	1.25089
2008-01-01	-0.01188
2008-04-01	0.02269
2008-07-01	0.04402
2008-10-01	0.04076
2009-01-01	-0.03028
2009-04-01	0.07058
2009-07-01	-0.03792
2009-10-01	-0.03491
2010-01-01	-0.14823
2010-04-01	-0.00107
2010-07-01	0.00263
2010-10-01	0.00133
2011-01-01	0.02457
2011-04-01	0.00813
2011-07-01	0.02898
2011-10-01	0.01563
2012-01-01	-0.03688
2012-04-01	2.38781
2012-07-01	0.26849
2012-10-01	-0.86045
2013-01-01	-2.38277
2013-04-01	0.01003
2013-07-01	-0.02587
2013-10-01	-0.11366
2014-01-01	0.01928
2014-04-01	0.05129
2014-07-01	-0.01075
2014-10-01	0.05775
2015-01-01	0.00243
2015-04-01	-0.11069