Quarter	Billions of US Dollars
1996-01-01	0.00583
1996-10-01	0.02458
1997-01-01	0.17077
1997-04-01	0.10761
1997-07-01	0.00147
1997-10-01	0.08283
1998-01-01	-0.00194
1998-04-01	0.00241
1998-07-01	-0.00321
1998-10-01	-0.00386
1999-01-01	-0.04086
1999-04-01	-0.00117
1999-07-01	-0.06459
1999-10-01	-0.00483
2000-01-01	0.06120
2000-04-01	-0.05417
2000-07-01	-0.00049
2000-10-01	0.00010
2001-01-01	-0.00297
2005-07-01	0.05740
2005-10-01	0.16779
2006-01-01	0.12558
2006-04-01	0.17949
2006-07-01	0.03743
2006-10-01	0.00984
2007-01-01	0.00070
2007-04-01	0.56560
2007-07-01	0.05668
2007-10-01	0.17274
2008-01-01	0.18951
2008-04-01	0.47496
2008-07-01	0.48967
2008-10-01	-0.01454
2009-01-01	0.04174
2009-04-01	0.21998
2009-07-01	0.17350
2009-10-01	0.47311
2010-01-01	0.50933
2010-04-01	0.78601
2010-07-01	0.57023
2010-10-01	0.98764
2011-01-01	1.03747
2011-04-01	0.96912
2011-07-01	0.69837
2011-10-01	0.68449
2012-01-01	0.85858
2012-04-01	0.42914
2012-07-01	0.59996
2012-10-01	0.78317
2013-01-01	-0.57687
2013-04-01	0.44843
2013-07-01	0.52839
2013-10-01	0.06479
2014-01-01	-0.35258
2014-04-01	0.38327
2014-07-01	1.74361
2014-10-01	0.37153
2015-01-01	0.85826
2015-04-01	0.20610