Quarter	Billions of US Dollars
1993-07-01	0.02000
1993-10-01	-0.03000
1994-01-01	0.14626
1994-04-01	-0.13858
1994-07-01	0.12538
1994-10-01	0.00640
1995-01-01	-0.03248
1995-04-01	0.03376
1995-07-01	0.09092
1995-10-01	0.00565
1996-01-01	0.04083
1996-04-01	0.15721
1996-07-01	0.06698
1996-10-01	0.14812
1997-01-01	0.23469
1997-04-01	0.09576
1997-07-01	0.42130
1997-10-01	-0.47878
1998-01-01	-0.14597
1998-04-01	-0.14583
1998-07-01	-0.31250
1998-10-01	0.31764
1999-01-01	0.49987
1999-04-01	0.01826
1999-07-01	0.08499
1999-10-01	0.61293
2000-01-01	-0.55875
2000-04-01	-0.05049
2000-07-01	0.05444
2000-10-01	-0.56670
2001-01-01	0.07020
2001-04-01	0.22476
2001-07-01	-0.01685
2001-10-01	-0.28237
2002-01-01	-0.17662
2002-04-01	0.12533
2002-07-01	-0.18861
2002-10-01	0.22961
2003-01-01	-0.26829
2003-04-01	-0.01282
2003-07-01	0.08655
2003-10-01	0.01053
2004-01-01	-0.00419
2004-04-01	-0.12029
2004-07-01	0.23390
2004-10-01	-0.27630
2005-01-01	-0.09736
2005-04-01	-0.03641
2005-07-01	-0.26500
2005-10-01	0.03800
2006-01-01	-0.03100
2006-04-01	0.01450
2006-07-01	0.00800
2006-10-01	0.01075
2007-01-01	-0.00052
2007-04-01	0.04698
2007-07-01	-0.05944
2007-10-01	0.04268
2008-01-01	-0.00721
2008-04-01	-0.00828
2008-07-01	-0.01720
2008-10-01	-0.01870
2009-01-01	-0.01107
2009-04-01	-0.01949
2009-07-01	0.02372
2009-10-01	-0.00212
2010-01-01	-0.00390
2010-04-01	-0.03552
2010-07-01	-4.06194
2010-10-01	0.00479
2011-01-01	-0.00114
2011-04-01	0.01890
2011-07-01	-0.00803
2011-10-01	-0.01436
2012-01-01	0.00294
2012-04-01	-0.00219
2012-07-01	-0.00106
2012-10-01	0.00073
2013-01-01	0.00307
2013-04-01	0.00712
2013-07-01	-7.80917
2013-10-01	0.01605
2014-01-01	0.04893
2014-04-01	-0.03431
2014-07-01	0.00501
2014-10-01	-0.00084
2015-01-01	0.16069
2015-04-01	0.91749