Quarter	Billions of US Dollars
1987-10-01	-0.03133
1988-01-01	0.15220
1988-04-01	0.04355
1988-07-01	-0.02724
1988-10-01	-0.03108
1989-07-01	0.07940
1990-01-01	-0.04436
1990-04-01	-0.09081
1990-07-01	-0.03742
1991-07-01	-0.02867
1992-04-01	-0.00017
1993-01-01	-0.06611
1994-01-01	0.19080
1994-07-01	-0.09602
1994-10-01	0.07500
1995-01-01	0.40900
1995-04-01	0.04815
1995-07-01	0.34420
1996-07-01	0.13718
1997-04-01	0.01083
1997-07-01	0.48584
1997-10-01	0.01000
1998-04-01	-0.00500
1998-07-01	-0.03655
1998-10-01	-0.00500
1999-01-01	-0.00718
1999-07-01	0.11426
2000-01-01	-0.23351
2000-04-01	0.13744
2000-07-01	0.45911
2000-10-01	-0.04553
2001-01-01	0.46194
2001-04-01	-0.04000
2001-07-01	-0.14375
2002-01-01	-0.20000
2002-04-01	0.65000
2002-07-01	0.90833
2002-10-01	0.38514
2003-01-01	0.35777
2003-04-01	0.00860
2003-07-01	0.00744
2003-10-01	0.70003
2004-01-01	-0.27641
2004-04-01	0.60592
2004-07-01	-0.15226
2004-10-01	1.50004
2005-01-01	0.00004
2005-04-01	2.82542
2005-07-01	-0.13949
2006-01-01	4.26989
2006-04-01	1.00350
2006-07-01	0.44356
2006-10-01	5.91200
2007-01-01	0.75000
2007-04-01	1.43247
2007-07-01	-0.53131
2007-10-01	1.39408
2008-01-01	-4.28857
2008-04-01	1.44672
2008-07-01	0.24053
2008-10-01	-0.20356
2009-01-01	0.06706
2009-04-01	0.08668
2009-07-01	-0.04863
2009-10-01	-4.52000
2010-01-01	-0.09986
2010-04-01	-2.06141
2010-07-01	4.26251
2010-10-01	0.05893
2011-01-01	-0.51438
2011-04-01	0.14665
2011-07-01	-0.24377
2011-10-01	0.77751
2012-01-01	0.17360
2012-04-01	-1.33779
2012-07-01	2.04586
2012-10-01	5.31199
2013-01-01	0.92079
2013-04-01	-0.68098
2013-07-01	0.28959
2013-10-01	0.85000
2014-01-01	0.25640
2014-04-01	1.55957
2014-07-01	1.40000
2014-10-01	1.66274
2015-01-01	1.19479
2015-04-01	3.54834