Quarter	Billions of US Dollars
1993-07-01	4.35935
1993-10-01	-0.36990
1994-01-01	0.88064
1994-04-01	-0.23915
1994-07-01	0.23115
1994-10-01	-1.90546
1995-01-01	-3.44500
1995-04-01	0.04950
1995-07-01	1.03930
1995-10-01	-0.54661
1996-01-01	0.45893
1996-04-01	0.76933
1996-07-01	-1.21591
1996-10-01	-0.20152
1997-01-01	-0.41169
1997-04-01	-0.16758
1997-07-01	0.29851
1997-10-01	-0.52448
1998-01-01	0.02667
1998-04-01	-0.24977
1998-07-01	-0.07173
1998-10-01	-0.24239
1999-01-01	0.33358
1999-04-01	0.02214
1999-07-01	0.06691
1999-10-01	0.08046
2000-01-01	-0.19185
2000-04-01	-0.19355
2000-07-01	0.13287
2000-10-01	1.46986
2001-01-01	0.32274
2001-04-01	0.48610
2001-07-01	-2.47032
2001-10-01	-0.06592
2002-01-01	-0.07387
2002-04-01	-0.02338
2002-07-01	0.01834
2002-10-01	-0.16063
2003-01-01	-0.09408
2003-04-01	-0.02100
2003-07-01	-0.05418
2003-10-01	0.04603
2004-01-01	-0.05762
2004-04-01	0.11607
2004-07-01	0.03559
2004-10-01	0.23219
2005-01-01	-0.14197
2005-04-01	0.19314
2005-07-01	-0.10793
2005-10-01	0.00643
2006-01-01	0.16222
2006-04-01	0.18487
2006-07-01	0.06019
2006-10-01	-0.17498
2007-01-01	0.03492
2007-04-01	-0.08720
2007-07-01	0.05646
2007-10-01	-0.20802
2008-01-01	-0.08226
2008-04-01	0.00711
2008-07-01	-0.03651
2008-10-01	0.20485
2009-01-01	-0.05204
2009-04-01	-0.05950
2009-07-01	0.07590
2009-10-01	-0.03652
2010-01-01	0.10930
2010-04-01	-0.07075
2010-07-01	0.17927
2010-10-01	-0.09762
2011-01-01	-0.03844
2011-04-01	0.03788
2011-07-01	0.23093
2011-10-01	-0.06109
2012-01-01	0.00735
2012-04-01	0.08062
2012-07-01	-0.09814
2012-10-01	0.04038
2013-01-01	0.05271
2013-04-01	0.03986
2013-07-01	-0.01841
2013-10-01	-0.03356
2014-01-01	0.69725
2014-04-01	-0.10154
2014-07-01	-0.13194
2014-10-01	-0.08615
2015-01-01	-0.30087
2015-04-01	0.95722