Quarter	Billions of US Dollars
1993-07-01	4.21165
1993-10-01	0.58275
1994-01-01	6.94595
1994-04-01	2.63996
1994-07-01	5.32011
1994-10-01	-0.62020
1995-01-01	1.51711
1995-04-01	2.10493
1995-07-01	4.55748
1995-10-01	-0.32700
1996-01-01	2.27496
1996-04-01	-1.58403
1996-07-01	0.85065
1996-10-01	0.92942
1997-01-01	1.62711
1997-04-01	0.14860
1997-07-01	1.53139
1997-10-01	-2.85884
1998-01-01	2.76334
1998-04-01	-1.15975
1998-07-01	2.26077
1998-10-01	4.03318
1999-01-01	-1.69777
1999-04-01	0.01152
1999-07-01	-1.97714
1999-10-01	1.65060
2000-01-01	-2.22624
2000-04-01	-3.74634
2000-07-01	-1.27982
2000-10-01	-1.59340
2001-01-01	-0.05985
2001-04-01	-0.90736
2001-07-01	-0.11611
2001-10-01	0.01451
2002-01-01	-0.20551
2002-04-01	-1.37227
2002-07-01	-0.76215
2002-10-01	2.12134
2003-01-01	-4.53833
2003-04-01	2.07049
2003-07-01	-0.12633
2003-10-01	-2.35989
2004-01-01	-1.24952
2004-04-01	-1.84553
2004-07-01	1.23316
2004-10-01	-1.00930
2005-01-01	2.03954
2005-04-01	1.64764
2005-07-01	-3.41889
2005-10-01	1.53334
2006-01-01	-3.25362
2006-04-01	-0.49879
2006-07-01	-0.81454
2006-10-01	1.58756
2007-01-01	0.92802
2007-04-01	-0.59819
2007-07-01	-3.65114
2007-10-01	-2.78153
2008-01-01	-1.50358
2008-04-01	3.93232
2008-07-01	-2.95461
2008-10-01	-3.80660
2009-01-01	-0.04765
2009-04-01	9.18993
2009-07-01	-0.77207
2009-10-01	8.87927
2010-01-01	4.11892
2010-04-01	9.16339
2010-07-01	2.81578
2010-10-01	0.75638
2011-01-01	1.52405
2011-04-01	3.46842
2011-07-01	4.10800
2011-10-01	-2.33768
2012-01-01	0.65966
2012-04-01	6.05700
2012-07-01	0.53143
2012-10-01	-0.69198
2013-01-01	-0.96066
2013-04-01	-3.74255
2013-07-01	3.13087
2013-10-01	-1.11488
2014-01-01	3.08867
2014-04-01	0.09130
2014-07-01	-1.05821
2014-10-01	0.85983
2015-01-01	1.43714
2015-04-01	-8.97513