Quarter	Billions of US Dollars
1987-01-01	0.0619
1987-04-01	-0.0050
1987-07-01	-0.0026
1988-01-01	0.2732
1988-04-01	0.0752
1988-07-01	0.3182
1988-10-01	0.0767
1989-01-01	0.5347
1989-04-01	-0.0250
1989-07-01	0.6281
1989-10-01	0.1420
1990-01-01	0.2912
1990-04-01	0.0010
1990-07-01	-0.0030
1992-01-01	0.1281
1992-04-01	-0.0537
1992-10-01	0.1220
1993-04-01	-0.1909
1993-10-01	0.0375
1994-01-01	-0.2985
1994-04-01	-0.0968
1994-07-01	-0.0412
1994-10-01	0.0141
1995-01-01	-0.4297
1995-04-01	-0.0049
1995-07-01	-0.4545
1995-10-01	-0.0363
1996-01-01	-0.0359
1996-04-01	0.0286
1996-07-01	-1.1475
1996-10-01	-0.0468
1997-01-01	0.2143
1997-04-01	0.3285
1997-07-01	0.2587
1997-10-01	0.2731
1998-01-01	-0.1438
1998-04-01	-0.1935
1998-07-01	0.1468
1998-10-01	-0.0895
1999-01-01	-0.0060
1999-04-01	-0.0540
1999-07-01	-0.0074
1999-10-01	0.1142
2000-01-01	0.3395
2000-04-01	0.3141
2000-07-01	-0.4087
2000-10-01	-0.1588
2001-01-01	0.0385
2001-04-01	0.4670
2001-07-01	-0.0125
2001-10-01	0.1022
2002-01-01	-0.1220
2002-04-01	0.1431
2002-07-01	-0.0859
2002-10-01	-0.0111
2003-01-01	-0.0915
2003-04-01	0.2935
2003-07-01	-0.0116
2003-10-01	1.8259
2004-01-01	0.6995
2004-04-01	0.2956
2004-07-01	1.1230
2004-10-01	1.1789
2005-01-01	1.2791
2005-04-01	3.3214
2005-07-01	1.4930
2005-10-01	3.4282
2006-01-01	3.3127
2006-04-01	1.8885
2006-07-01	3.2160
2006-10-01	6.5404
2007-01-01	4.0760
2007-04-01	8.7004
2007-07-01	-0.4859
2007-10-01	4.2897
2008-01-01	1.5476
2008-04-01	8.7163
2008-07-01	1.1395
2008-10-01	-1.5342
2009-01-01	-2.9275
2009-04-01	0.2062
2009-07-01	-0.6517
2009-10-01	-0.8615
2010-01-01	-0.2895
2010-04-01	-2.7014
2010-07-01	11.8749
2010-10-01	10.3417
2011-01-01	3.0836
2011-04-01	4.0907
2011-07-01	-1.2799
2011-10-01	0.1989
2012-01-01	5.7917
2012-04-01	7.2375
2012-07-01	26.1634
2012-10-01	15.2478
2013-01-01	9.8516
2013-04-01	2.3051
2013-07-01	1.1153
2013-10-01	7.7086
2014-01-01	3.7163
2014-04-01	2.6286
2014-07-01	5.4078
2014-10-01	4.1011
2015-01-01	-0.4393
2015-04-01	-1.5027