Quarter	Billions of US Dollars
1993-07-01	0.03000
1993-10-01	0.07305
1994-01-01	-0.05825
1994-04-01	-0.03760
1994-07-01	-0.00720
1995-01-01	1.24664
1995-04-01	0.69287
1995-07-01	1.59755
1995-10-01	0.09899
1996-01-01	1.99446
1996-04-01	0.13942
1996-07-01	0.81140
1996-10-01	0.85997
1997-01-01	2.83337
1997-04-01	0.10872
1997-07-01	1.21154
1997-10-01	0.38327
1998-01-01	1.61617
1998-04-01	0.06114
1998-07-01	0.00357
1999-04-01	0.79626
1999-07-01	0.33976
1999-10-01	-0.09279
2000-01-01	0.14384
2000-04-01	0.69508
2000-07-01	-0.35777
2000-10-01	0.05111
2001-01-01	0.17191
2001-04-01	0.45419
2001-07-01	0.00185
2001-10-01	-0.38011
2002-01-01	-1.87579
2002-04-01	-0.06297
2002-07-01	-0.87836
2002-10-01	-1.07928
2003-01-01	-1.15216
2003-04-01	-0.43904
2003-07-01	0.07485
2003-10-01	0.00918
2004-01-01	-0.03730
2004-04-01	-0.22415
2004-07-01	-0.12010
2004-10-01	-0.12655
2005-01-01	-0.14707
2005-04-01	-1.24959
2005-07-01	-0.51601
2005-10-01	-0.54311
2006-01-01	-0.90432
2006-04-01	-0.64851
2006-07-01	-0.16697
2006-10-01	-0.08495
2007-01-01	-0.18839
2007-04-01	-0.02485
2007-07-01	-0.03651
2008-01-01	-0.76328
2008-04-01	0.20094
2008-07-01	-0.08642
2008-10-01	-0.06243
2009-01-01	-0.01067
2009-04-01	-0.39065
2009-07-01	-0.13674
2009-10-01	-0.05575
2010-07-01	-0.01048
2011-01-01	-0.08019
2011-04-01	-0.02448
2011-07-01	-0.39836
2013-04-01	-0.13880
2013-07-01	-0.01010