Quarter	Billions of US Dollars
1987-01-01	0.0619
1987-04-01	-0.0328
1987-07-01	-0.0045
1988-01-01	0.2732
1988-04-01	0.0723
1988-07-01	0.3182
1988-10-01	0.0767
1989-01-01	0.5075
1989-04-01	-0.0250
1989-07-01	0.6028
1989-10-01	0.1420
1990-01-01	0.2912
1990-04-01	0.0010
1990-07-01	0.1270
1990-10-01	0.2221
1992-01-01	0.1111
1992-04-01	-0.0537
1992-10-01	0.1090
1993-04-01	-0.1909
1993-07-01	0.0616
1993-10-01	0.0375
1994-01-01	-0.2985
1994-04-01	-0.0968
1994-07-01	-0.0498
1994-10-01	0.0966
1995-01-01	-0.4417
1995-07-01	-0.6229
1995-10-01	-0.3125
1996-01-01	-0.0547
1996-04-01	0.0784
1996-07-01	-1.2639
1996-10-01	-0.0797
1997-01-01	0.1420
1997-04-01	0.3167
1997-07-01	0.2864
1997-10-01	0.2595
1998-01-01	-0.0408
1998-04-01	-0.0997
1998-07-01	0.0939
1998-10-01	-0.0260
1999-04-01	-0.1500
1999-10-01	0.1176
2000-01-01	0.3970
2000-04-01	0.1447
2000-07-01	-0.2927
2000-10-01	-0.1500
2001-01-01	0.0385
2001-04-01	0.3856
2001-07-01	-0.0144
2001-10-01	0.8452
2002-01-01	-0.0415
2002-04-01	0.0533
2002-07-01	-0.0754
2002-10-01	-0.0003
2003-04-01	0.5417
2003-10-01	1.2081
2004-01-01	0.4333
2004-04-01	-0.1500
2004-07-01	1.3641
2004-10-01	0.4203
2005-01-01	1.0988
2005-04-01	1.0492
2005-07-01	1.1290
2005-10-01	2.0876
2006-01-01	1.7374
2006-04-01	0.5854
2006-07-01	3.3172
2006-10-01	2.3550
2007-01-01	3.2108
2007-04-01	4.6417
2007-07-01	0.9335
2007-10-01	0.5254
2008-01-01	1.4699
2008-04-01	1.5876
2008-07-01	1.1204
2008-10-01	-1.2111
2009-01-01	-0.7804
2009-04-01	-0.5677
2009-07-01	-1.4922
2009-10-01	0.3281
2010-01-01	-4.1286
2010-04-01	-1.7609
2010-07-01	3.4241
2010-10-01	1.3129
2011-01-01	1.0728
2011-04-01	1.5677
2011-07-01	-1.3470
2011-10-01	0.9492
2012-01-01	0.2599
2012-04-01	3.2529
2012-07-01	13.2377
2012-10-01	15.2510
2013-01-01	6.1952
2013-04-01	5.8735
2013-07-01	0.0521
2013-10-01	6.4058
2014-01-01	1.7553
2014-04-01	7.0655
2014-07-01	5.7110
2014-10-01	5.2295
2015-01-01	2.8408
2015-04-01	-0.1546