Quarter	Billions of US Dollars
1993-07-01	0.9576
1993-10-01	0.4376
1994-01-01	1.8973
1994-04-01	0.7020
1994-07-01	0.0471
1994-10-01	1.2429
1995-01-01	2.6980
1995-04-01	0.6319
1995-07-01	-0.5967
1995-10-01	0.2478
1996-01-01	2.5132
1996-04-01	0.3821
1996-07-01	-0.2413
1996-10-01	-0.3274
1997-01-01	0.7393
1997-04-01	0.3187
1997-07-01	0.2536
1997-10-01	-0.6606
1998-01-01	0.8366
1998-04-01	0.5543
1998-07-01	1.0384
1998-10-01	2.1640
1999-01-01	4.6642
1999-04-01	1.7411
1999-07-01	-2.4674
1999-10-01	-0.7438
2000-01-01	3.6581
2000-04-01	-0.5407
2000-07-01	-1.2477
2000-10-01	-2.7388
2001-01-01	4.3400
2001-04-01	-0.2447
2001-07-01	-0.1933
2001-10-01	-0.9778
2002-01-01	6.7951
2002-04-01	0.1173
2002-07-01	-0.0452
2002-10-01	-0.8943
2003-01-01	6.4326
2003-04-01	7.3986
2003-07-01	-0.8989
2003-10-01	-1.5531
2004-01-01	4.8388
2004-04-01	2.7195
2004-07-01	0.5630
2004-10-01	-4.2177
2005-01-01	7.8019
2005-04-01	7.2539
2005-07-01	-2.0614
2005-10-01	-4.7942
2006-01-01	5.1191
2006-04-01	7.2361
2006-07-01	-2.2578
2006-10-01	-3.7787
2007-01-01	10.8259
2007-04-01	7.9832
2007-07-01	9.0585
2007-10-01	-22.6401
2008-01-01	11.4968
2008-04-01	-1.1179
2008-07-01	-2.3622
2008-10-01	6.0654
2009-01-01	6.7489
2009-04-01	-1.1705
2009-07-01	-3.4826
2009-10-01	-1.5607
2010-01-01	5.9289
2010-04-01	-0.9418
2010-07-01	-3.5301
2010-10-01	-1.5613
2011-01-01	9.7416
2011-04-01	-1.5144
2011-07-01	-1.8435
2011-10-01	-2.7366
2012-01-01	-3.6440
2012-04-01	0.8633
2012-07-01	1.3466
2012-10-01	-1.7849
2013-01-01	1.6680
2013-04-01	-0.0649
2013-07-01	10.6160
2013-10-01	-6.3623
2014-01-01	-1.9923
2014-04-01	5.7080
2014-07-01	-4.1341
2014-10-01	3.7354
2015-01-01	1.6021
2015-04-01	-0.3884