Quarter	Billions of US Dollars
1993-07-01	-0.6367
1993-10-01	-1.3559
1994-01-01	-0.8369
1994-04-01	0.5948
1994-07-01	-1.6694
1994-10-01	-1.8595
1995-01-01	-0.8893
1995-04-01	-2.2476
1995-07-01	-1.7487
1995-10-01	-1.4270
1996-01-01	-1.0438
1996-04-01	0.2086
1996-07-01	0.4834
1996-10-01	-0.5668
1997-01-01	-0.2931
1997-04-01	2.2413
1997-07-01	-0.9017
1997-10-01	-0.6355
1998-01-01	0.8079
1998-04-01	1.5396
1998-07-01	4.2718
1998-10-01	7.0948
1999-01-01	1.3873
1999-04-01	6.6915
1999-07-01	4.7226
1999-10-01	6.2273
2000-01-01	2.7996
2000-04-01	3.2481
2000-07-01	4.4402
2000-10-01	3.4561
2001-01-01	6.6461
2001-04-01	4.0633
2001-07-01	3.1181
2001-10-01	10.4566
2002-01-01	1.6166
2002-04-01	2.8288
2002-07-01	-0.3341
2002-10-01	-2.0707
2003-01-01	-5.0117
2003-04-01	4.0490
2003-07-01	-1.6911
2003-10-01	-0.7327
2004-01-01	-9.4146
2004-04-01	0.3016
2004-07-01	-3.3109
2004-10-01	-9.9520
2005-01-01	0.2106
2005-04-01	-4.4615
2005-07-01	-2.7898
2005-10-01	-1.4076
2006-01-01	1.8986
2006-04-01	-3.3811
2006-07-01	-1.7032
2006-10-01	-0.6011
2007-01-01	-2.1086
2007-04-01	-0.5719
2007-07-01	4.2260
2007-10-01	1.5212
2008-01-01	-3.7923
2008-04-01	1.0789
2008-07-01	-11.3579
2008-10-01	-0.5510
2009-01-01	0.8248
2009-04-01	-1.6963
2009-07-01	-0.0921
2009-10-01	0.2121
2010-01-01	-0.9870
2010-04-01	-0.5451
2010-07-01	-3.2758
2010-10-01	-0.4162
2011-01-01	-0.5722
2011-04-01	1.8877
2011-07-01	-2.9706
2011-10-01	-1.8803
2012-01-01	-0.1132
2012-04-01	-0.5645
2012-07-01	-3.4471
2012-10-01	3.5301
2013-01-01	5.9441
2013-04-01	4.7977
2013-07-01	2.4724
2013-10-01	12.3858
2014-01-01	3.3942
2014-04-01	2.7667
2014-07-01	2.0914
2014-10-01	-0.5429
2015-01-01	1.2354
2015-04-01	5.3548