Quarter	Billions of US Dollars
1993-07-01	0.11285
1993-10-01	1.07610
1994-01-01	0.46554
1994-04-01	0.34150
1994-07-01	0.66991
1994-10-01	0.17069
1995-01-01	0.25207
1995-04-01	0.08859
1995-07-01	0.81213
1995-10-01	1.99032
1996-01-01	-0.19776
1996-04-01	-1.63527
1996-07-01	0.46087
1996-10-01	0.37270
1997-01-01	0.05801
1997-04-01	1.07718
1997-07-01	0.12333
1997-10-01	0.76982
1998-01-01	1.46285
1998-04-01	1.63645
1998-07-01	1.01288
1998-10-01	0.36936
1999-01-01	1.36546
1999-04-01	2.03878
1999-07-01	1.24824
1999-10-01	1.33106
2000-01-01	3.02893
2000-04-01	-0.29171
2000-07-01	1.07284
2000-10-01	1.13830
2001-01-01	1.11534
2001-04-01	2.11835
2001-07-01	1.97627
2001-10-01	1.45707
2002-01-01	2.87984
2002-04-01	2.35209
2002-07-01	1.22431
2002-10-01	0.03318
2003-01-01	1.35550
2003-04-01	2.95529
2003-07-01	0.48741
2003-10-01	0.35366
2004-01-01	2.90908
2004-04-01	1.30332
2004-07-01	1.05291
2004-10-01	1.18899
2005-01-01	1.09398
2005-04-01	3.01649
2005-07-01	2.60404
2005-10-01	-5.11206
2006-01-01	0.59539
2006-04-01	2.62482
2006-07-01	1.14486
2006-10-01	2.66022
2007-01-01	0.45144
2007-04-01	3.06596
2007-07-01	-0.47778
2007-10-01	3.04026
2008-01-01	-3.28719
2008-04-01	-0.56071
2008-07-01	-0.16715
2008-10-01	0.26950
2009-01-01	-1.54007
2009-04-01	3.07952
2009-07-01	1.32196
2009-10-01	-1.28145
2010-01-01	1.38159
2010-04-01	-1.50949
2010-07-01	0.91812
2010-10-01	-1.51764
2011-01-01	0.91658
2011-04-01	-0.80913
2011-07-01	-0.83215
2011-10-01	-0.54574
2012-01-01	1.45158
2012-04-01	-2.60852
2012-07-01	-0.24174
2012-10-01	-0.87280
2013-01-01	0.59917
2013-04-01	-1.61357
2013-07-01	0.62439
2013-10-01	0.43660
2014-01-01	0.53623
2014-04-01	-1.15250
2014-07-01	-0.15305
2014-10-01	-4.17201
2015-01-01	1.84344
2015-04-01	1.69058