Quarter	Billions of US Dollars
1993-07-01	-4.21258
1993-10-01	1.67556
1994-01-01	-2.54239
1994-04-01	-1.87959
1994-07-01	-1.07268
1994-10-01	-1.34519
1995-01-01	-1.38457
1995-04-01	-0.50088
1995-07-01	-1.76292
1995-10-01	0.74852
1996-01-01	-0.41448
1996-04-01	-0.17908
1996-07-01	-1.41005
1996-10-01	-2.53235
1997-01-01	-1.14801
1997-04-01	-2.35204
1997-07-01	-1.65938
1997-10-01	-3.20367
1998-01-01	-3.05806
1998-04-01	0.62934
1998-07-01	-0.35388
1998-10-01	-1.20801
1999-01-01	-1.14379
1999-04-01	-0.24994
1999-07-01	-0.83126
1999-10-01	-1.23771
2000-01-01	-1.14203
2000-04-01	-0.81455
2000-07-01	-1.28862
2000-10-01	-0.66943
2001-01-01	-1.01224
2001-04-01	-0.35774
2001-07-01	-0.97851
2001-10-01	-0.41900
2002-01-01	0.36185
2002-04-01	0.74641
2002-07-01	-0.43605
2002-10-01	-0.09786
2003-01-01	-0.10245
2003-04-01	-0.13460
2003-07-01	1.26098
2003-10-01	0.72358
2004-01-01	-0.23517
2004-04-01	-0.30144
2004-07-01	-0.11478
2004-10-01	-0.30177
2005-01-01	-0.64959
2005-04-01	-0.81439
2005-07-01	-0.28757
2005-10-01	-0.21910
2006-01-01	-0.36406
2006-04-01	0.28575
2006-07-01	-0.01859
2006-10-01	1.10902
2007-01-01	0.19662
2007-04-01	0.97471
2007-07-01	-1.33531
2007-10-01	0.33101
2008-01-01	-0.93748
2008-10-01	-0.35876
2009-04-01	-0.08986
2009-07-01	-0.47984
2009-10-01	1.12396
2010-01-01	-0.83938
2010-04-01	-0.45122
2010-07-01	-0.03681
2010-10-01	-2.11686
2011-04-01	-0.36629
2011-10-01	-0.82737
2012-01-01	-1.03853
2012-04-01	-0.41752
2012-07-01	3.89546
2012-10-01	-0.37587
2013-01-01	-4.10163
2013-04-01	-0.63707
2014-04-01	-1.03529
2014-07-01	-0.00400