Quarter	Billions of US Dollars
1993-07-01	0.31498
1993-10-01	0.07683
1994-01-01	-0.03236
1994-04-01	-0.02730
1994-07-01	-0.03435
1994-10-01	-0.09927
1995-01-01	0.05740
1995-04-01	-0.01659
1995-07-01	0.16591
1995-10-01	-0.18199
1996-01-01	-0.00058
1996-04-01	0.17129
1996-07-01	0.43573
1996-10-01	0.27688
1997-01-01	0.75972
1997-04-01	0.66960
1997-07-01	0.11279
1997-10-01	0.00059
1998-01-01	0.09849
1998-04-01	-0.10037
1998-07-01	0.36701
1998-10-01	0.32705
1999-01-01	2.21864
1999-04-01	-2.11898
1999-07-01	1.85473
1999-10-01	-0.16310
2000-01-01	-1.94849
2000-04-01	-0.24256
2000-07-01	0.46796
2000-10-01	-0.04118
2001-01-01	0.02261
2001-04-01	0.13120
2001-07-01	-0.22418
2001-10-01	-0.09929
2002-01-01	0.21646
2002-04-01	0.01397
2002-07-01	0.12309
2002-10-01	-0.90439
2003-01-01	-0.23376
2003-04-01	-0.79771
2003-07-01	-0.21893
2003-10-01	0.08633
2004-01-01	-0.02773
2004-04-01	-0.04766
2004-07-01	0.36232
2004-10-01	-0.15666
2005-01-01	0.22825
2005-04-01	-0.07942
2005-07-01	-0.77004
2005-10-01	0.30079
2006-01-01	0.55213
2006-04-01	0.28398
2006-07-01	0.31207
2006-10-01	-0.36707
2007-01-01	-0.33196
2007-04-01	0.00361
2007-07-01	-0.13003
2007-10-01	0.15966
2008-01-01	0.51757
2008-04-01	0.47022
2008-07-01	-0.04778
2008-10-01	0.26201
2009-01-01	0.20010
2009-04-01	-0.29641
2009-07-01	-0.47755
2009-10-01	0.01720
2010-01-01	1.44767
2010-04-01	-1.10631
2010-07-01	1.19914
2010-10-01	0.98496
2011-01-01	1.28062
2011-04-01	3.22064
2011-07-01	0.71544
2011-10-01	1.35482
2012-01-01	5.09726
2012-04-01	1.66271
2012-07-01	2.63420
2012-10-01	-0.95949
2013-01-01	4.58821
2013-04-01	5.36146
2013-07-01	1.80857
2013-10-01	5.62139
2014-01-01	3.46161
2014-04-01	6.32810
2014-07-01	3.68881
2014-10-01	-1.12825
2015-01-01	4.21820
2015-04-01	-5.61954