Quarter	Billions of US Dollars
1994-04-01	0.12300
1994-07-01	-0.12300
1994-10-01	0.07131
1995-01-01	-0.00376
1995-04-01	0.00331
1995-07-01	0.00830
1995-10-01	-0.00519
1996-01-01	-0.00188
1996-04-01	0.03010
1996-07-01	-0.01305
1996-10-01	0.04749
1997-01-01	-0.06492
1997-04-01	0.11044
1997-07-01	0.10685
1997-10-01	-0.00076
1998-01-01	0.04735
1998-04-01	0.44019
1998-07-01	0.17146
1998-10-01	0.00508
1999-01-01	0.36463
1999-04-01	0.14253
1999-07-01	0.70051
1999-10-01	-0.33870
2000-01-01	-0.67859
2000-04-01	0.09849
2000-07-01	0.10859
2000-10-01	-0.17691
2001-01-01	0.54538
2001-04-01	-0.84245
2001-07-01	-0.00553
2001-10-01	0.10846
2002-01-01	-0.03335
2002-04-01	-0.08568
2002-07-01	0.30567
2002-10-01	-0.25998
2003-01-01	-0.13483
2003-04-01	0.15291
2003-07-01	0.03430
2003-10-01	-0.37335
2004-01-01	-0.26225
2004-04-01	0.18951
2004-07-01	0.38179
2004-10-01	-0.29919
2005-01-01	-0.28667
2005-04-01	0.03134
2005-07-01	0.50823
2005-10-01	-0.16689
2006-01-01	0.24409
2006-04-01	-0.03488
2006-07-01	-0.23711
2006-10-01	-0.21947
2007-01-01	0.56674
2007-04-01	-0.28025
2007-07-01	-0.40072
2007-10-01	0.57947
2008-01-01	-0.31964
2008-04-01	-0.01093
2008-07-01	-0.13662
2008-10-01	-0.22975
2009-01-01	-0.18424
2009-04-01	0.06257
2009-07-01	0.01859
2009-10-01	-0.26641
2010-01-01	0.30573
2010-04-01	-0.20313
2010-07-01	-0.03768
2010-10-01	-0.02702
2011-01-01	-0.03276
2011-04-01	-0.01871
2011-10-01	-0.00278
2012-01-01	0.05708
2012-04-01	0.03215
2012-07-01	-0.08126
2012-10-01	-0.01038
2013-01-01	0.27063
2013-04-01	-0.21819
2013-07-01	0.11788
2013-10-01	-0.10569
2014-01-01	0.19238
2014-04-01	-0.10435
2014-07-01	-0.02329
2014-10-01	0.07617
2015-01-01	0.13788
2015-04-01	-0.25998