Quarter	Billions of US Dollars
1990-07-01	0.15004
1990-10-01	0.22210
1992-04-01	0.01550
1993-04-01	0.30000
1993-07-01	0.32410
1994-01-01	0.00003
1994-04-01	0.25000
1995-01-01	0.07290
1995-04-01	-0.01791
1995-07-01	-0.17455
1995-10-01	-0.24581
1996-04-01	-0.30000
1996-07-01	0.04597
1996-10-01	0.04879
1997-01-01	-3.53423
1997-04-01	0.25000
1998-01-01	-0.05775
1998-10-01	0.20000
1999-04-01	-0.04087
2000-07-01	-0.32536
2001-07-01	0.02155
2001-10-01	0.87949
2002-04-01	0.17806
2003-01-01	0.18244
2003-10-01	0.15000
2004-04-01	2.01588
2004-07-01	0.12445
2004-10-01	0.40282
2005-01-01	1.31481
2005-07-01	-0.39427
2005-10-01	-0.20000
2006-04-01	-0.00201
2006-07-01	0.29287
2006-10-01	-0.57112
2007-01-01	0.23714
2007-04-01	0.23300
2007-07-01	0.05001
2007-10-01	0.84310
2008-01-01	0.13814
2008-04-01	3.23263
2008-07-01	1.19024
2008-10-01	-0.18166
2009-01-01	0.19056
2009-04-01	2.41493
2009-07-01	0.15667
2009-10-01	2.68960
2010-01-01	0.20903
2010-04-01	2.52068
2010-07-01	3.03444
2010-10-01	0.69005
2011-01-01	0.14935
2011-04-01	1.34798
2011-07-01	0.03693
2011-10-01	0.04822
2012-01-01	2.71802
2012-04-01	1.71996
2012-07-01	0.57243
2012-10-01	3.76839
2013-01-01	-0.22634
2013-04-01	1.78640
2013-07-01	0.33114
2013-10-01	0.54287
2014-01-01	1.09521
2014-04-01	-3.07515
2014-07-01	0.23399
2014-10-01	-1.03753
2015-01-01	0.44051
2015-04-01	-0.78263