Quarter	Billions of US Dollars
1993-07-01	1.30842
1993-10-01	0.36071
1994-01-01	0.05777
1994-04-01	-0.74464
1994-07-01	-0.07184
1994-10-01	-0.07688
1995-01-01	0.44584
1995-04-01	-0.12856
1995-07-01	0.19889
1995-10-01	0.71791
1996-01-01	0.02017
1996-04-01	-0.72232
1996-07-01	-0.40815
1996-10-01	1.00790
1997-01-01	0.07407
1997-04-01	0.01799
1997-07-01	0.13360
1997-10-01	-0.09959
1998-01-01	0.44107
1998-04-01	1.20066
1998-07-01	-0.39395
1998-10-01	-0.38037
1999-01-01	0.62317
1999-04-01	-0.22264
1999-07-01	0.08537
1999-10-01	-0.43816
2000-01-01	-0.16383
2000-04-01	0.68266
2000-07-01	0.26837
2000-10-01	0.16412
2001-01-01	-0.18890
2001-04-01	1.62063
2001-07-01	-0.05904
2001-10-01	-0.28634
2002-01-01	-0.11351
2002-04-01	0.35862
2002-07-01	0.35311
2002-10-01	-0.04002
2003-01-01	-0.20619
2003-04-01	0.23092
2003-07-01	0.08112
2003-10-01	-0.35417
2004-01-01	0.36266
2004-04-01	-0.06192
2004-07-01	0.81983
2004-10-01	0.20447
2005-01-01	-0.48126
2005-04-01	0.08410
2005-07-01	0.08938
2005-10-01	-0.32447
2006-01-01	-0.42155
2006-04-01	0.48332
2006-07-01	0.20177
2006-10-01	0.31475
2007-01-01	1.81994
2007-04-01	0.83202
2007-07-01	-0.68378
2007-10-01	0.47413
2008-01-01	1.06753
2008-04-01	0.02837
2008-07-01	1.54385
2008-10-01	0.17988
2009-01-01	-0.21924
2009-04-01	-0.17282
2009-07-01	0.39122
2009-10-01	0.94140
2010-01-01	1.89694
2010-04-01	-0.79831
2010-07-01	2.47153
2010-10-01	2.86602
2011-01-01	1.65268
2011-04-01	2.70761
2011-07-01	0.77670
2011-10-01	2.38264
2012-01-01	2.29128
2012-04-01	0.06095
2012-07-01	3.36321
2012-10-01	1.81828
2013-01-01	4.63087
2013-04-01	-0.81085
2013-07-01	1.91034
2013-10-01	1.04080
2014-01-01	1.15055
2014-04-01	1.02658
2014-07-01	2.87562
2014-10-01	2.15791
2015-01-01	4.55816
2015-04-01	5.36290