Quarter	Billions of US Dollars
1987-01-01	-0.1341
1987-04-01	0.0050
1987-07-01	0.0112
1987-10-01	-0.0948
1988-01-01	0.1245
1988-04-01	0.8672
1988-07-01	0.4755
1988-10-01	0.2675
1989-01-01	0.7984
1989-04-01	0.7993
1989-07-01	0.0913
1989-10-01	0.6719
1990-01-01	1.2806
1990-04-01	-0.1731
1990-07-01	0.4088
1990-10-01	0.1005
1991-01-01	0.2810
1991-04-01	-0.4153
1991-07-01	-0.1433
1991-10-01	-0.3282
1992-01-01	-0.4700
1992-04-01	0.5136
1992-07-01	0.4424
1992-10-01	-0.1681
1993-01-01	-0.4407
1993-04-01	-0.6444
1993-07-01	0.2139
1993-10-01	1.3580
1994-01-01	0.3532
1994-04-01	-0.1542
1994-07-01	0.8934
1994-10-01	0.5136
1995-01-01	-0.7841
1995-04-01	-0.6296
1995-07-01	-0.0149
1995-10-01	0.2686
1996-01-01	0.7862
1996-04-01	0.3955
1996-07-01	0.3733
1996-10-01	-0.2261
1997-01-01	1.2258
1997-04-01	0.1894
1997-07-01	0.4021
1997-10-01	0.7748
1998-01-01	-0.1909
1998-04-01	1.0348
1998-07-01	0.7709
1998-10-01	-0.5349
1999-01-01	0.2375
1999-04-01	2.8290
1999-07-01	1.2469
1999-10-01	0.0082
2000-01-01	2.3921
2000-04-01	-0.5647
2000-07-01	-1.0824
2000-10-01	0.9745
2001-01-01	1.6580
2001-04-01	-0.4019
2001-07-01	0.2537
2001-10-01	-0.6864
2002-01-01	-0.1903
2002-04-01	1.8259
2002-07-01	2.1655
2002-10-01	-1.3220
2003-01-01	3.3116
2003-04-01	1.0992
2003-07-01	-1.1733
2003-10-01	1.1167
2004-01-01	5.5196
2004-04-01	1.0483
2004-07-01	1.0920
2004-10-01	1.3505
2005-01-01	3.9435
2005-04-01	7.3127
2005-07-01	2.8945
2005-10-01	-1.3317
2006-01-01	7.5335
2006-04-01	0.2784
2006-07-01	-1.9180
2006-10-01	9.3458
2007-01-01	12.0753
2007-04-01	9.5776
2007-07-01	-0.1503
2007-10-01	3.7612
2008-01-01	4.6263
2008-04-01	21.5080
2008-07-01	16.5999
2008-10-01	-7.3891
2009-01-01	8.2004
2009-04-01	15.0302
2009-07-01	8.6838
2009-10-01	2.3510
2010-01-01	22.9003
2010-04-01	-1.9393
2010-07-01	-1.0079
2010-10-01	-1.7827
2011-01-01	5.7363
2011-04-01	4.3465
2011-07-01	8.8798
2011-10-01	-3.4818
2012-01-01	12.9590
2012-04-01	6.1908
2012-07-01	3.7653
2012-10-01	-4.4620
2013-01-01	-0.7994
2013-04-01	4.0903
2013-07-01	11.2485
2013-10-01	-9.4603
2014-01-01	-0.0185
2014-04-01	2.8559
2014-07-01	1.1309
2014-10-01	-4.8742
2015-01-01	3.9909
2015-04-01	2.8096