Quarter	Billions of US Dollars
1989-10-01	0.01300
1990-01-01	-0.01300
1992-04-01	0.07000
1992-07-01	0.01000
1992-10-01	-0.00400
1993-01-01	-0.03300
1993-04-01	0.10400
1993-07-01	0.12986
1993-10-01	-0.02259
1994-01-01	0.29184
1994-04-01	-0.00074
1994-07-01	-0.10735
1994-10-01	-0.12000
1995-01-01	-0.16425
1995-04-01	-0.03460
1995-07-01	0.04773
1995-10-01	0.00767
1996-01-01	0.07217
1996-04-01	0.35017
1996-07-01	-0.34906
1996-10-01	-0.02230
1997-01-01	-0.07128
1997-04-01	-0.04753
1997-07-01	0.03726
1997-10-01	0.02865
1998-01-01	0.02708
1998-04-01	-0.02965
1998-07-01	0.02531
1998-10-01	0.01934
1999-01-01	-0.01472
1999-04-01	-0.01667
1999-07-01	0.04315
1999-10-01	0.21770
2000-01-01	-0.24014
2000-04-01	0.29694
2000-07-01	-0.00996
2000-10-01	0.02880
2001-01-01	0.36777
2001-04-01	-0.62619
2001-07-01	0.15214
2001-10-01	-0.17536
2002-01-01	0.12318
2002-04-01	-0.05482
2002-07-01	0.42285
2002-10-01	-0.10000
2003-01-01	0.17682
2003-04-01	-0.01852
2003-07-01	0.18646
2003-10-01	0.12233
2004-01-01	-0.21084
2004-04-01	0.00353
2004-07-01	0.33155
2004-10-01	-0.30529
2005-01-01	0.43850
2005-04-01	0.34326
2005-07-01	0.55865
2005-10-01	-0.73486
2006-01-01	1.01069
2006-04-01	-0.44346
2006-07-01	-1.28399
2006-10-01	1.00810
2007-01-01	-0.27973
2007-04-01	-0.11189
2007-07-01	0.45535
2007-10-01	0.57006
2008-01-01	-0.05876
2008-04-01	-0.91677
2008-07-01	-0.28273
2008-10-01	-0.28521
2009-01-01	-0.07696
2009-04-01	0.05744
2009-07-01	-0.26859
2009-10-01	-0.68172
2010-01-01	0.01722
2010-04-01	-0.17653
2010-07-01	0.23095
2010-10-01	0.07734
2011-01-01	0.75338
2011-04-01	0.00034
2011-07-01	-0.44886
2011-10-01	-0.11165
2012-01-01	0.05753
2012-04-01	-0.04014
2012-07-01	-0.27238
2012-10-01	-0.28972
2013-01-01	0.02227
2013-04-01	-0.00162
2013-07-01	-0.03221
2013-10-01	0.02107
2014-01-01	0.05679
2014-04-01	-0.00735
2014-07-01	-0.09789
2014-10-01	0.09155
2015-01-01	0.02760
2015-04-01	0.00879