Quarter	Billions of US Dollars
1993-07-01	0.20150
1993-10-01	-0.03250
1994-01-01	0.07720
1994-04-01	0.00524
1994-07-01	0.01452
1994-10-01	0.00066
1995-01-01	-0.02951
1995-04-01	0.02706
1995-07-01	0.02605
1995-10-01	-0.03571
1996-01-01	-0.01117
1996-04-01	-0.01791
1996-07-01	0.01148
1996-10-01	0.01403
1997-01-01	0.01558
1997-04-01	0.33362
1997-07-01	-0.03518
1997-10-01	-0.05058
1998-01-01	-0.00828
1998-04-01	0.00253
1998-07-01	0.37635
1998-10-01	-0.05586
1999-01-01	0.01217
1999-04-01	0.26598
1999-07-01	0.03519
1999-10-01	0.01888
2000-01-01	-0.01541
2000-04-01	-0.02196
2000-07-01	0.02489
2000-10-01	-0.06625
2001-01-01	0.07146
2001-04-01	0.01040
2001-07-01	-0.04890
2001-10-01	-0.02144
2002-01-01	0.49629
2002-04-01	-0.30801
2002-07-01	0.07016
2002-10-01	-0.16813
2003-01-01	-0.03319
2003-04-01	0.00018
2003-07-01	0.11618
2003-10-01	0.10524
2004-01-01	0.03809
2004-04-01	0.17797
2004-07-01	0.31411
2004-10-01	0.13869
2005-01-01	0.01102
2005-04-01	-0.25542
2005-07-01	0.01397
2005-10-01	-0.06655
2006-04-01	-0.35165
2008-07-01	-0.21846
2008-10-01	0.23776
2009-01-01	-0.34237
2009-04-01	2.47152
2009-07-01	-0.21453
2009-10-01	0.50825
2010-01-01	0.87900
2010-04-01	0.31865
2010-07-01	-0.08392
2010-10-01	1.11475
2011-01-01	0.40416
2011-04-01	0.32959
2011-07-01	0.06500
2011-10-01	0.21522
2012-01-01	-1.23951
2012-04-01	-0.56102
2012-07-01	-5.08350
2012-10-01	5.18904
2013-01-01	0.00660
2013-04-01	-1.50248
2013-07-01	-0.11258
2013-10-01	-3.13427
2014-01-01	3.03773
2014-04-01	1.24777
2014-07-01	-0.90740
2014-10-01	0.03747
2015-01-01	-0.04504
2015-04-01	1.10477