Quarter	Billions of US Dollars
1993-07-01	0.24920
1993-10-01	0.09810
1994-01-01	0.11855
1994-04-01	-0.11425
1994-07-01	0.41893
1994-10-01	-0.01819
1995-01-01	-0.49628
1995-04-01	-0.01729
1995-07-01	0.05161
1995-10-01	0.12958
1996-01-01	0.07043
1996-04-01	0.05213
1996-07-01	-0.00900
1996-10-01	0.22158
1997-01-01	0.07652
1997-04-01	-0.04594
1997-07-01	-0.01953
1997-10-01	-0.17734
1998-01-01	-0.15668
1998-04-01	0.84814
1998-07-01	0.44878
1998-10-01	-0.06489
1999-01-01	0.58533
1999-04-01	-0.65075
1999-07-01	-0.02756
1999-10-01	0.15232
2000-01-01	-0.18790
2000-04-01	-0.22108
2000-07-01	0.42184
2000-10-01	-0.60704
2001-01-01	0.03279
2001-04-01	0.00490
2001-07-01	-0.54196
2001-10-01	0.19610
2002-01-01	0.16062
2002-04-01	-0.14374
2002-07-01	0.05852
2002-10-01	0.25315
2003-01-01	0.13258
2003-04-01	0.02041
2003-07-01	-0.07779
2003-10-01	-0.02616
2004-01-01	-0.11861
2004-04-01	0.21574
2004-07-01	0.86363
2004-10-01	0.65161
2005-01-01	2.52206
2005-04-01	2.01138
2005-07-01	-0.51328
2005-10-01	-0.67863
2006-01-01	2.68534
2006-04-01	0.34626
2006-07-01	-2.68684
2006-10-01	2.45782
2007-01-01	5.91091
2007-04-01	0.20842
2007-07-01	-3.99672
2007-10-01	0.58767
2008-01-01	-5.04493
2008-04-01	2.54597
2008-07-01	3.40583
2008-10-01	-2.21345
2009-01-01	-5.29642
2009-04-01	-0.06250
2009-07-01	3.13400
2009-10-01	1.39467
2010-01-01	1.17126
2010-04-01	-0.85362
2010-07-01	0.14167
2010-10-01	-0.69248
2011-01-01	-0.82804
2011-04-01	-0.60720
2011-07-01	-0.43225
2011-10-01	-0.67830
2012-01-01	-0.32472
2012-04-01	-0.03652
2012-07-01	-0.51888
2012-10-01	-0.54486
2013-01-01	-0.22587
2013-04-01	-0.35397
2013-07-01	-0.54919
2013-10-01	-0.23479
2014-01-01	-0.25990
2014-04-01	-0.92807
2014-07-01	0.07603
2014-10-01	0.90019
2015-01-01	-1.68220
2015-04-01	-0.40610