Quarter	Billions of US Dollars
1993-07-01	1.36344
1993-10-01	0.27999
1994-01-01	0.01998
1994-04-01	-0.21503
1994-07-01	0.15473
1994-10-01	-0.29564
1995-01-01	0.17996
1995-04-01	0.06086
1995-07-01	-0.51908
1995-10-01	0.25352
1996-01-01	-0.02421
1996-04-01	1.42231
1996-07-01	-0.18405
1996-10-01	-0.16120
1997-01-01	0.07947
1997-04-01	1.62998
1997-07-01	-0.82676
1997-10-01	1.02472
1998-01-01	0.99139
1998-04-01	0.27567
1998-07-01	1.12203
1998-10-01	0.63892
1999-01-01	-0.35448
1999-04-01	0.72894
1999-07-01	-0.22117
1999-10-01	-0.18041
2000-01-01	-1.09367
2000-04-01	-0.87795
2000-07-01	-0.13468
2000-10-01	0.86798
2001-01-01	-1.09539
2001-04-01	-1.17989
2001-07-01	-0.25774
2001-10-01	0.61273
2002-01-01	0.70062
2002-04-01	-0.60569
2002-07-01	0.31481
2002-10-01	0.97904
2003-01-01	0.29435
2003-04-01	-0.50471
2003-07-01	-1.16907
2003-10-01	-0.05825
2004-01-01	-0.00148
2004-04-01	-0.33033
2004-07-01	-0.25632
2004-10-01	0.12370
2005-01-01	0.27404
2005-04-01	-0.58842
2005-07-01	-0.55880
2005-10-01	0.12896
2006-01-01	-0.77405
2006-04-01	1.35175
2006-07-01	0.50081
2006-10-01	0.75311
2007-01-01	0.58160
2007-04-01	2.14171
2007-07-01	-2.32087
2007-10-01	-1.26894
2008-01-01	0.51549
2008-04-01	0.41613
2008-07-01	-0.59562
2008-10-01	-0.48834
2009-01-01	-0.83706
2009-04-01	3.37284
2009-07-01	-1.39021
2009-10-01	-0.37429
2010-01-01	0.32136
2010-04-01	-0.35672
2010-07-01	-0.43952
2010-10-01	-1.47058
2011-01-01	0.19290
2011-04-01	-0.29332
2011-07-01	0.81652
2011-10-01	0.12757
2012-01-01	1.75358
2012-04-01	-0.41819
2012-07-01	-0.65619
2012-10-01	1.07001
2013-01-01	-0.34376
2013-04-01	-0.36559
2013-07-01	2.95300
2013-10-01	6.01014
2014-01-01	-1.83918
2014-04-01	3.32430
2014-07-01	0.12478
2014-10-01	-2.97584
2015-01-01	-0.21529
2015-04-01	1.87706