Quarter	Billions of US Dollars
1993-07-01	-0.06895
1995-04-01	0.00576
1995-10-01	-0.03501
1996-01-01	0.03935
1996-04-01	0.24000
1996-07-01	0.21827
1996-10-01	0.07682
1997-01-01	-0.00852
1997-04-01	0.23415
1997-07-01	0.00043
1997-10-01	0.15409
1998-01-01	0.05229
1998-04-01	0.16780
1998-07-01	0.28013
1998-10-01	0.19225
1999-01-01	0.50114
1999-04-01	0.47303
1999-07-01	0.24556
1999-10-01	0.23625
2000-01-01	0.03443
2000-04-01	0.35119
2000-07-01	0.30478
2000-10-01	0.46153
2001-01-01	0.42925
2001-04-01	0.38781
2001-07-01	0.46852
2001-10-01	0.55202
2002-01-01	0.92741
2002-04-01	0.77882
2002-07-01	3.82019
2002-10-01	3.59315
2003-01-01	1.68183
2003-04-01	1.22959
2003-07-01	0.63305
2003-10-01	0.19172
2004-01-01	0.38211
2004-04-01	-0.68669
2004-07-01	-0.69239
2004-10-01	-0.34824
2005-01-01	-0.63634
2005-04-01	-0.47076
2005-07-01	-0.01538
2005-10-01	-0.30857
2006-01-01	0.46066
2006-04-01	1.21608
2006-07-01	0.38514
2006-10-01	0.60764
2007-01-01	-0.58051
2007-04-01	1.71843
2007-07-01	-0.08966
2007-10-01	0.53448
2008-01-01	1.66423
2008-04-01	3.00981
2008-07-01	1.25609
2008-10-01	1.13259
2009-01-01	5.52403
2009-04-01	2.58266
2009-07-01	4.55391
2009-10-01	2.28298
2010-01-01	3.55207
2010-04-01	2.83422
2010-07-01	0.30597
2010-10-01	1.49722
2011-01-01	4.03368
2011-04-01	5.01504
2011-07-01	9.99267
2011-10-01	8.87033
2012-01-01	6.63774
2012-04-01	3.46637
2012-07-01	3.03556
2012-10-01	1.27617
2013-01-01	-0.10993
2013-04-01	1.72853
2013-07-01	-2.12947
2013-10-01	-0.25854
2014-01-01	0.97932
2014-04-01	-7.45865
2014-07-01	-0.62272
2014-10-01	-2.04815
2015-01-01	-0.82933
2015-04-01	-0.24146