Quarter	Billions of US Dollars
1993-07-01	2.00101
1993-10-01	-0.24857
1994-01-01	0.09821
1994-04-01	-0.19882
1994-07-01	0.38772
1994-10-01	-0.60570
1995-01-01	-0.05609
1995-04-01	-0.31545
1995-07-01	0.59962
1995-10-01	-0.27360
1996-01-01	-0.09070
1996-04-01	0.04511
1996-07-01	-0.36719
1996-10-01	0.76558
1997-01-01	-0.33863
1997-04-01	-0.06114
1997-07-01	-0.29355
1997-10-01	0.78140
1998-01-01	-0.55893
1998-04-01	-0.65484
1998-07-01	0.12985
1998-10-01	0.10959
1999-01-01	-0.18065
1999-04-01	0.30366
1999-07-01	1.15077
1999-10-01	-0.09855
2000-01-01	-0.96277
2000-04-01	0.07595
2000-07-01	-0.46368
2000-10-01	0.97372
2001-01-01	0.01854
2001-04-01	0.13897
2001-07-01	-0.24508
2001-10-01	-0.01659
2002-01-01	0.17259
2002-04-01	-0.66956
2002-07-01	0.72591
2002-10-01	1.20886
2003-01-01	-0.09827
2003-04-01	-1.44710
2003-07-01	0.48570
2003-10-01	-0.30013
2004-01-01	1.22229
2004-04-01	0.58487
2004-07-01	-0.80998
2004-10-01	3.08852
2005-01-01	-0.70452
2005-04-01	-0.37081
2005-07-01	0.65361
2005-10-01	0.67043
2006-01-01	2.50019
2006-04-01	-0.71970
2006-07-01	-1.10991
2006-10-01	-1.57577
2007-01-01	1.24521
2007-04-01	1.22353
2007-07-01	-0.89723
2007-10-01	-1.85216
2008-01-01	-0.94304
2008-04-01	2.78855
2008-07-01	0.96563
2008-10-01	1.58806
2009-01-01	2.61510
2009-04-01	1.57200
2009-07-01	0.49806
2009-10-01	0.10415
2010-01-01	-0.56023
2010-04-01	-0.13719
2010-07-01	1.67194
2010-10-01	1.33048
2011-01-01	-2.24488
2011-04-01	-0.15213
2011-07-01	-0.51644
2011-10-01	-0.88287
2012-01-01	-1.31355
2012-04-01	1.41615
2012-07-01	0.99066
2012-10-01	-3.73389
2013-01-01	2.20712
2013-04-01	-0.17316
2013-07-01	-1.89060
2013-10-01	-0.92933
2014-01-01	1.13350
2014-04-01	0.71363
2014-07-01	-1.93815
2014-10-01	1.00517
2015-01-01	-0.75390
2015-04-01	-0.81041