Quarter	Billions of US Dollars
1993-07-01	3.10364
1993-10-01	-1.45300
1994-01-01	-0.48502
1994-04-01	-0.35757
1994-07-01	0.14031
1994-10-01	-0.34612
1995-01-01	1.58512
1995-04-01	0.17896
1995-07-01	-1.04782
1995-10-01	0.10165
1996-01-01	-0.86393
1996-04-01	0.28404
1996-07-01	0.53813
1996-10-01	-0.05945
1997-01-01	0.09133
1997-04-01	-0.61506
1997-07-01	-0.23723
1997-10-01	0.24675
1998-01-01	0.15902
1998-04-01	-0.25240
1998-07-01	1.50963
1998-10-01	-1.09281
1999-01-01	0.43390
1999-04-01	0.15900
1999-07-01	1.01346
1999-10-01	-0.43707
2000-01-01	-0.92459
2000-04-01	-0.01919
2000-07-01	0.23275
2000-10-01	0.53705
2001-01-01	1.37396
2001-04-01	-0.53402
2001-07-01	0.42185
2001-10-01	0.05597
2002-01-01	-0.44361
2002-04-01	-0.81664
2002-07-01	-0.29970
2002-10-01	0.66925
2003-01-01	1.25421
2003-04-01	0.42273
2003-07-01	-0.72069
2003-10-01	1.53369
2004-01-01	1.68252
2004-04-01	-0.84558
2004-07-01	-1.26650
2004-10-01	0.77683
2005-01-01	0.55561
2005-04-01	-1.29965
2005-07-01	0.05820
2005-10-01	1.05999
2006-01-01	-0.56492
2006-04-01	0.45148
2006-07-01	-0.62744
2006-10-01	1.32839
2007-01-01	0.54184
2007-04-01	-0.10894
2007-07-01	-1.25226
2007-10-01	-2.20147
2008-01-01	1.93703
2008-04-01	-0.00718
2008-07-01	2.62999
2008-10-01	9.83608
2009-01-01	0.66406
2009-04-01	-2.36796
2009-07-01	1.24141
2009-10-01	-4.48644
2010-01-01	-1.45017
2010-04-01	2.25365
2010-07-01	-7.56316
2010-10-01	1.55545
2011-01-01	-2.24099
2011-04-01	-0.77926
2011-07-01	0.24374
2011-10-01	0.10464
2012-01-01	0.36363
2012-04-01	-0.05814
2012-07-01	0.32696
2012-10-01	-0.03282
2013-01-01	-0.38357
2013-04-01	0.19773
2013-07-01	0.24453
2013-10-01	-1.29937
2014-01-01	-1.03612
2014-04-01	0.52073
2014-07-01	0.82488
2014-10-01	-0.10481
2015-01-01	-0.94656
2015-04-01	0.89083