Quarter	Billions of US Dollars
1993-07-01	1.2245
1993-10-01	0.2999
1994-01-01	0.4629
1994-04-01	0.4458
1994-07-01	0.0325
1994-10-01	-0.9868
1995-01-01	0.2681
1995-04-01	0.6301
1995-07-01	0.8350
1995-10-01	0.2899
1996-01-01	0.5950
1996-04-01	2.5587
1996-07-01	0.1345
1996-10-01	1.6083
1997-01-01	1.1332
1997-04-01	0.5334
1997-07-01	-0.0191
1997-10-01	0.2541
1998-01-01	2.7975
1998-04-01	-0.8267
1998-07-01	-3.4410
1998-10-01	1.8049
1999-01-01	-1.0110
1999-04-01	0.4618
1999-07-01	1.4710
1999-10-01	0.9603
2000-01-01	-1.7293
2000-04-01	2.1071
2000-07-01	2.0545
2000-10-01	2.6812
2001-01-01	0.4636
2001-04-01	2.9444
2001-07-01	1.2862
2001-10-01	1.6889
2002-01-01	-0.1708
2002-04-01	2.6606
2002-07-01	-8.1512
2002-10-01	-1.3654
2003-01-01	-4.6395
2003-04-01	-2.6499
2003-07-01	2.5147
2003-10-01	8.0546
2004-01-01	-2.6159
2004-04-01	-1.0180
2004-07-01	-2.3177
2004-10-01	4.2588
2005-01-01	2.2643
2005-04-01	-2.7279
2005-07-01	-2.5366
2005-10-01	2.5222
2006-01-01	3.2911
2006-04-01	1.8438
2006-07-01	1.5125
2006-10-01	0.9616
2007-01-01	3.3818
2007-04-01	0.8273
2007-07-01	2.0876
2007-10-01	-6.2694
2008-01-01	-1.7847
2008-04-01	9.7890
2008-07-01	0.4651
2008-10-01	-9.2758
2009-01-01	1.2299
2009-04-01	0.1938
2009-07-01	-1.1053
2009-10-01	-2.2612
2010-01-01	4.0256
2010-04-01	0.8227
2010-07-01	0.9762
2010-10-01	-5.1328
2011-01-01	0.1166
2011-04-01	3.7520
2011-07-01	-5.4498
2011-10-01	-2.8285
2012-01-01	10.2902
2012-04-01	-1.3728
2012-07-01	-0.5673
2012-10-01	-3.1191
2013-01-01	2.1291
2013-04-01	2.6619
2013-07-01	2.6216
2013-10-01	-1.3568
2014-01-01	5.8269
2014-04-01	0.8713
2014-07-01	-1.0666
2014-10-01	-1.2543
2015-01-01	1.6254
2015-04-01	-1.2326