Quarter	Billions of US Dollars
1993-07-01	0.92998
1993-10-01	-0.03714
1994-01-01	0.39343
1994-04-01	-0.33372
1994-07-01	-0.06201
1994-10-01	-0.06339
1995-01-01	-0.01486
1995-04-01	0.07710
1995-07-01	-0.02360
1995-10-01	-0.56329
1996-01-01	0.19752
1996-04-01	-1.19899
1996-07-01	-1.22833
1996-10-01	0.33875
1997-01-01	0.14979
1997-04-01	0.70114
1997-07-01	-0.24912
1998-01-01	-0.26215
1998-04-01	-0.40315
1998-07-01	-0.30688
1998-10-01	0.15140
1999-01-01	0.99808
1999-04-01	-0.27314
1999-07-01	1.09264
1999-10-01	-0.10946
2000-01-01	0.30254
2000-04-01	0.09004
2000-07-01	-0.16687
2001-01-01	-0.00691
2001-04-01	-0.39088
2001-10-01	0.24553
2002-01-01	0.07186
2002-04-01	0.64476
2002-07-01	-0.02322
2002-10-01	0.34602
2003-04-01	-0.01502
2003-07-01	0.49330
2003-10-01	0.33014
2004-01-01	-0.11842
2004-04-01	0.10608
2004-07-01	-0.75417
2004-10-01	0.54083
2005-01-01	0.57640
2005-04-01	0.06944
2005-10-01	0.55846
2006-01-01	-0.02072
2006-04-01	-0.54759
2006-07-01	-2.46622
2006-10-01	-1.00592
2007-01-01	-0.30929
2007-04-01	0.84777
2007-07-01	-0.73636
2007-10-01	-1.77210
2008-01-01	0.10273
2008-04-01	0.02172
2008-07-01	0.08001
2008-10-01	1.86378
2009-01-01	-0.17683
2009-04-01	0.60957
2009-07-01	-0.69740
2009-10-01	-0.14973
2010-01-01	0.07979
2010-04-01	0.56041
2010-07-01	-0.60924
2010-10-01	0.01630
2011-04-01	-0.59547
2011-07-01	-0.10458
2011-10-01	-0.01259
2012-04-01	-0.60172
2012-07-01	0.49234
2012-10-01	-0.36433
2013-01-01	-0.21696
2013-04-01	0.06670
2013-07-01	0.06849
2013-10-01	0.89333
2014-01-01	0.16670
2014-04-01	-0.49618
2014-07-01	-0.68949
2014-10-01	0.68553
2015-01-01	0.16453
2015-04-01	-0.06885