Quarter	Billions of US Dollars
1993-07-01	0.03115
1993-10-01	-0.04095
1994-01-01	0.01550
1994-04-01	0.01800
1994-07-01	-0.01550
1994-10-01	-0.01750
1995-01-01	0.00100
1995-04-01	0.01500
1995-07-01	-0.01500
1995-10-01	0.67209
1996-01-01	-0.53285
1996-04-01	0.16956
1996-07-01	-0.12134
1996-10-01	0.00916
1997-01-01	0.40847
1997-04-01	0.00696
1997-07-01	0.11842
1997-10-01	-0.15148
1998-01-01	0.11468
1998-04-01	-0.38547
1998-07-01	-0.07506
1998-10-01	-0.13554
1999-01-01	0.48111
1999-04-01	-0.31336
1999-07-01	0.14556
1999-10-01	1.25372
2000-01-01	0.33708
2000-04-01	-0.31750
2000-07-01	0.22901
2000-10-01	0.46556
2001-01-01	0.15626
2001-04-01	0.44227
2001-07-01	0.87665
2001-10-01	0.27559
2002-01-01	0.52098
2002-04-01	-0.34040
2002-07-01	0.42061
2002-10-01	-0.21929
2003-01-01	0.53204
2003-04-01	3.12560
2003-07-01	0.73295
2003-10-01	-1.83142
2004-01-01	0.98394
2004-04-01	0.75661
2004-07-01	-1.28128
2004-10-01	0.65174
2005-01-01	0.04499
2005-04-01	0.13106
2005-07-01	-0.62320
2005-10-01	1.18304
2006-01-01	-0.72174
2006-04-01	2.33935
2006-07-01	2.94123
2006-10-01	1.68003
2007-01-01	-0.60822
2007-04-01	4.00376
2007-07-01	1.23146
2007-10-01	0.01643
2008-01-01	0.96569
2008-04-01	3.71740
2008-07-01	-1.65270
2008-10-01	-4.19193
2009-01-01	1.48230
2009-04-01	2.81765
2009-07-01	1.25562
2009-10-01	-0.72068
2010-01-01	2.32911
2010-04-01	-9.60514
2010-07-01	-1.72993
2010-10-01	-5.62566
2011-01-01	0.28789
2011-04-01	-0.93572
2011-07-01	0.18073
2011-10-01	0.02293
2012-01-01	-2.64253
2012-04-01	-0.07320
2012-07-01	-0.53846
2012-10-01	2.97260
2013-01-01	-0.93192
2013-04-01	-1.25375
2013-07-01	-0.67046
2013-10-01	-1.33894
2014-01-01	-1.61969
2014-04-01	0.14380
2014-07-01	-1.20786
2014-10-01	-0.98289
2015-01-01	-0.05475
2015-04-01	-0.08522