Quarter	Billions of US Dollars
1993-07-01	1.37746
1993-10-01	-0.14005
1994-01-01	0.86633
1994-04-01	-0.63889
1994-07-01	-0.05082
1994-10-01	0.14459
1995-01-01	-0.05546
1995-04-01	0.09757
1995-07-01	0.85187
1995-10-01	-0.90495
1996-01-01	-1.01571
1996-04-01	6.57149
1996-07-01	-7.21788
1996-10-01	0.16500
1997-01-01	-0.00186
1997-04-01	-0.14391
1997-07-01	-0.02765
1997-10-01	0.11960
1998-01-01	-0.23572
1998-07-01	0.54459
1998-10-01	-0.19858
1999-01-01	0.10539
1999-04-01	0.15886
1999-07-01	-0.67060
1999-10-01	0.70501
2000-01-01	-0.43305
2000-04-01	-0.03581
2000-07-01	0.31157
2000-10-01	-0.02923
2001-01-01	0.38991
2001-04-01	-0.16747
2001-07-01	-0.31803
2001-10-01	0.02796
2002-01-01	-0.13334
2002-04-01	0.05265
2002-07-01	0.08490
2002-10-01	-0.24104
2003-01-01	-0.01480
2003-04-01	0.40242
2003-07-01	-0.10673
2003-10-01	-6.52763
2004-01-01	0.27668
2004-04-01	0.06192
2004-10-01	-0.27074
2005-01-01	-0.00295
2005-04-01	0.23423
2005-07-01	0.31831
2005-10-01	0.12027
2006-01-01	-0.32853
2006-04-01	0.91815
2006-07-01	-0.13646
2006-10-01	0.66040
2007-01-01	1.76828
2007-04-01	0.16198
2007-07-01	-0.05181
2007-10-01	-3.15317
2008-01-01	1.71155
2008-04-01	1.48849
2008-07-01	-0.53230
2008-10-01	-1.23737
2009-01-01	-1.51357
2009-04-01	-0.59931
2009-07-01	0.28713
2009-10-01	-0.12110
2010-01-01	-0.09310
2010-04-01	2.42638
2010-07-01	-0.25823
2010-10-01	0.06634
2011-01-01	0.03151
2011-04-01	-2.22324
2011-07-01	1.40000
2011-10-01	0.08299
2012-01-01	-0.12400
2012-04-01	1.25626
2012-07-01	-1.40000
2012-10-01	0.14202
2013-01-01	0.17491
2013-04-01	-0.06100
2014-01-01	-1.00000
2014-04-01	-1.00000
2014-10-01	0.16293
2015-04-01	0.11048