Quarter	Billions of US Dollars
1993-07-01	1.92851
1993-10-01	0.39895
1994-01-01	-0.30936
1994-04-01	-0.00417
1994-07-01	-0.15860
1994-10-01	-0.16103
1995-01-01	-0.29231
1995-04-01	0.09932
1995-07-01	0.29497
1995-10-01	1.09301
1996-01-01	-0.14074
1996-04-01	-0.58102
1996-07-01	0.39344
1996-10-01	0.79964
1997-01-01	0.25485
1997-04-01	0.60066
1997-07-01	0.27805
1997-10-01	-1.42355
1998-01-01	-0.23805
1998-04-01	-0.45676
1998-07-01	0.63003
1998-10-01	-0.29102
1999-01-01	-0.83478
1999-04-01	-0.56553
1999-07-01	-0.78020
1999-10-01	0.26101
2000-01-01	0.03451
2000-04-01	0.27628
2000-07-01	-0.07125
2000-10-01	-0.07025
2001-01-01	-0.14250
2001-04-01	-0.13798
2001-07-01	0.09196
2001-10-01	-0.31282
2002-01-01	-0.08384
2002-04-01	-0.14559
2002-07-01	-0.15582
2002-10-01	-0.07506
2003-01-01	-0.02203
2003-04-01	0.03100
2003-07-01	-0.00200
2004-01-01	-0.01400
2004-07-01	0.01250
2005-01-01	-0.00015
2005-04-01	0.00012
2005-07-01	-0.01247
2005-10-01	0.21004
2006-01-01	0.05334
2006-04-01	-0.13701
2006-07-01	0.00287
2006-10-01	0.17592
2007-01-01	0.04138
2007-04-01	0.94842
2007-07-01	0.22498
2007-10-01	0.27113
2008-01-01	0.55959
2008-04-01	-0.96479
2008-07-01	-0.32911
2008-10-01	-0.23615
2009-01-01	0.34353
2009-04-01	0.02108
2009-07-01	0.16932
2009-10-01	-0.06625
2010-01-01	-0.69594
2010-04-01	-0.08225
2010-07-01	-0.18486
2010-10-01	0.03628
2011-01-01	0.04013
2011-04-01	0.01934
2011-07-01	1.17874
2011-10-01	0.45245
2012-01-01	0.07850
2012-04-01	-0.08790
2012-07-01	-1.01097
2012-10-01	0.02200
2013-01-01	0.27153
2013-04-01	1.01370
2013-07-01	0.12575
2013-10-01	0.03550
2014-01-01	-0.30450
2014-04-01	-0.90232
2014-07-01	0.20013
2014-10-01	-0.42645
2015-01-01	-0.03117
2015-04-01	-0.04266