Quarter	Billions of US Dollars
1993-07-01	5.3587
1993-10-01	1.8034
1994-01-01	3.0138
1994-04-01	6.5868
1994-07-01	3.9969
1994-10-01	1.8272
1995-01-01	0.3297
1995-04-01	2.9802
1995-07-01	3.0365
1995-10-01	-1.3658
1996-01-01	1.2873
1996-04-01	5.2710
1996-07-01	-2.8436
1996-10-01	-0.5355
1997-01-01	-1.3934
1997-04-01	1.1870
1997-07-01	-0.0710
1997-10-01	-3.9276
1998-01-01	-3.1573
1998-04-01	1.8268
1998-07-01	-1.8078
1998-10-01	-3.5057
1999-01-01	-5.7678
1999-04-01	-2.7343
1999-07-01	-1.6523
1999-10-01	-1.7652
2000-01-01	-2.1795
2000-04-01	-1.2149
2000-07-01	-2.0246
2000-10-01	-0.9100
2001-01-01	-1.2371
2001-04-01	-0.2815
2001-07-01	-1.3881
2001-10-01	-0.2425
2002-01-01	-0.1030
2002-04-01	0.8106
2002-07-01	-1.1143
2002-10-01	0.4010
2003-01-01	-1.8195
2003-04-01	-0.8645
2003-07-01	-0.1635
2003-10-01	-0.4029
2004-01-01	-0.8884
2004-04-01	-0.2634
2004-07-01	-0.0705
2004-10-01	0.2568
2005-01-01	1.8351
2005-04-01	-0.5416
2005-07-01	-0.0266
2005-10-01	-0.6423
2006-01-01	0.8142
2006-04-01	0.6163
2006-07-01	-0.1388
2006-10-01	0.3170
2007-01-01	-0.9371
2007-04-01	1.5781
2007-07-01	-1.3881
2007-10-01	1.9803
2008-01-01	-3.6610
2008-04-01	-0.2542
2008-07-01	-0.8089
2008-10-01	-1.0348
2009-01-01	4.7596
2009-04-01	8.8612
2009-07-01	4.4908
2009-10-01	0.1304
2010-01-01	2.6835
2010-04-01	-5.5034
2010-07-01	-0.0958
2010-10-01	7.7161
2011-01-01	-4.7219
2011-04-01	-0.4370
2011-07-01	-2.0833
2011-10-01	4.1504
2012-01-01	-3.4004
2012-04-01	2.2318
2012-07-01	-0.0979
2012-10-01	11.3525
2013-01-01	10.7281
2013-04-01	-1.8979
2013-07-01	3.7534
2013-10-01	1.0192
2014-01-01	0.5484
2014-04-01	4.5242
2014-07-01	2.9616
2014-10-01	10.4201
2015-01-01	-4.8637
2015-04-01	-7.8911