Quarter	Billions of US Dollars
1988-10-01	0.04000
1993-07-01	-0.03384
1994-10-01	0.00187
1995-01-01	-0.00107
1995-04-01	-0.00080
1996-01-01	0.02700
1996-04-01	0.08333
1996-07-01	0.00730
1996-10-01	0.03687
1997-01-01	0.02700
1997-04-01	0.05300
1997-07-01	-0.01275
1997-10-01	0.10666
1998-01-01	0.05169
1998-04-01	-0.02911
1998-07-01	-0.01008
1998-10-01	-0.03008
1999-01-01	0.06365
1999-04-01	-0.14532
1999-07-01	0.01700
1999-10-01	0.20003
2000-01-01	-0.04127
2000-04-01	-0.04028
2000-07-01	-0.05415
2000-10-01	-0.13250
2001-01-01	-0.01075
2001-04-01	0.03439
2001-07-01	-0.01064
2001-10-01	-0.08985
2002-01-01	-0.00744
2002-04-01	-0.01647
2002-07-01	-0.02075
2002-10-01	-0.03940
2003-01-01	0.05258
2003-04-01	0.00262
2003-07-01	0.01074
2003-10-01	0.08868
2004-01-01	0.17420
2004-04-01	0.07247
2004-07-01	0.25305
2004-10-01	0.08770
2005-01-01	0.06951
2005-04-01	0.16848
2005-07-01	0.40696
2005-10-01	0.69428
2006-01-01	0.12783
2006-04-01	-0.09507
2006-07-01	0.06094
2006-10-01	-0.10832
2007-01-01	0.05381
2007-04-01	0.14998
2007-07-01	0.41608
2007-10-01	0.61077
2008-01-01	0.42418
2008-04-01	0.18327
2008-07-01	0.26520
2008-10-01	-0.24056
2009-01-01	-0.59863
2009-04-01	1.53161
2009-07-01	-0.15230
2009-10-01	-0.43730
2010-01-01	0.08236
2010-04-01	0.03570
2010-07-01	-0.19220
2010-10-01	-0.76537
2011-01-01	-0.10959
2011-04-01	0.24792
2011-07-01	0.07336
2011-10-01	-0.01382
2012-01-01	0.28475
2012-04-01	0.87525
2012-07-01	-0.50367
2012-10-01	0.24381
2013-01-01	0.17568
2013-04-01	-0.62948
2013-07-01	-0.05467
2013-10-01	-0.00336
2014-01-01	-0.22524
2014-04-01	-0.80424
2014-07-01	1.28571
2014-10-01	0.10183
2015-01-01	0.41529
2015-04-01	-0.19499