Quarter	Billions of US Dollars
1993-10-01	0.01600
1994-04-01	0.00400
1995-01-01	-0.02000
1995-10-01	0.03335
1996-01-01	-0.00465
1996-04-01	0.04130
1996-07-01	-0.02000
1996-10-01	-0.05000
1998-01-01	0.04722
1998-07-01	-0.04722
1998-10-01	0.00901
1999-01-01	0.01085
1999-04-01	-0.00458
1999-07-01	0.00010
1999-10-01	0.00408
2000-01-01	0.02431
2000-04-01	0.00199
2000-07-01	0.00355
2000-10-01	-0.03457
2001-01-01	-0.00961
2001-04-01	0.01373
2002-01-01	0.00876
2002-07-01	0.01375
2002-10-01	-0.00500
2003-01-01	0.00707
2003-04-01	0.01000
2003-07-01	0.00913
2003-10-01	0.00594
2004-01-01	0.02467
2004-04-01	0.00361
2004-07-01	0.00367
2005-01-01	-0.05654
2005-04-01	-0.04155
2005-07-01	-0.01018
2006-04-01	-0.00201
2006-07-01	0.04346
2006-10-01	0.08511
2007-01-01	-0.04346
2007-04-01	0.00382
2007-07-01	0.00191
2007-10-01	0.02416
2008-01-01	-0.01173
2008-04-01	-0.00821
2008-07-01	0.19048
2008-10-01	-0.26685
2009-01-01	-0.00471
2011-07-01	0.00700
2011-10-01	0.11546
2012-01-01	-0.03466
2012-04-01	0.14891
2012-07-01	0.03247
2012-10-01	-0.14868
2013-01-01	-0.01640
2013-04-01	0.56691
2013-07-01	0.74200
2013-10-01	0.21091
2014-01-01	0.14919
2014-04-01	1.04270
2014-07-01	0.79318
2014-10-01	0.35542
2015-01-01	0.05475
2015-04-01	-0.20534