Quarter	Billions of US Dollars
1993-07-01	0.4498
1993-10-01	0.2421
1994-01-01	1.7465
1994-07-01	0.5543
1994-10-01	0.4676
1995-01-01	0.9822
1995-04-01	1.1174
1995-07-01	0.5915
1995-10-01	1.3019
1996-01-01	0.6629
1996-04-01	1.0367
1996-07-01	0.2075
1996-10-01	0.8058
1997-01-01	1.2945
1997-04-01	1.1278
1997-07-01	-0.3235
1997-10-01	3.5275
1998-01-01	-0.1217
1998-04-01	0.0309
1998-07-01	-0.0562
1998-10-01	-1.6805
1999-01-01	0.0699
1999-04-01	-0.5545
1999-07-01	1.4731
1999-10-01	-0.9432
2000-01-01	-0.3951
2000-04-01	-1.0917
2000-07-01	0.3033
2000-10-01	-0.1545
2001-01-01	-1.6343
2001-04-01	-0.3898
2001-07-01	-0.2601
2001-10-01	0.1554
2002-01-01	-1.0198
2002-04-01	0.7074
2002-07-01	-0.6448
2002-10-01	-2.1680
2003-01-01	0.1647
2003-04-01	0.8499
2003-07-01	0.3450
2003-10-01	0.0163
2004-01-01	-0.6871
2004-04-01	4.4265
2004-07-01	2.2859
2004-10-01	0.5306
2005-01-01	-1.7104
2005-04-01	0.6835
2005-07-01	0.3080
2005-10-01	0.8989
2006-01-01	0.7415
2006-04-01	-5.0920
2006-07-01	-0.4473
2006-10-01	0.1045
2007-01-01	-0.6924
2007-04-01	-0.1271
2007-07-01	-0.0842
2007-10-01	0.3076
2008-01-01	-0.5242
2008-04-01	-0.0541
2008-07-01	0.3098
2008-10-01	0.1109
2009-01-01	15.3188
2009-04-01	6.0419
2009-07-01	6.8097
2009-10-01	-4.0181
2010-01-01	8.4528
2010-04-01	1.9401
2010-07-01	0.8593
2010-10-01	1.7027
2011-01-01	2.2242
2011-04-01	4.4281
2011-07-01	2.6110
2011-10-01	2.9570
2012-01-01	7.9207
2012-04-01	2.1485
2012-07-01	7.1432
2012-10-01	3.6661
2013-01-01	13.2332
2013-04-01	5.1044
2013-07-01	10.1955
2013-10-01	5.8315
2014-01-01	14.7705
2014-04-01	8.6063
2014-07-01	1.0701
2014-10-01	3.4697
2015-01-01	-7.6872
2015-04-01	1.6354