Quarter	Billions of US Dollars
1993-10-01	0.0105
1995-07-01	0.0250
1995-10-01	-0.0105
1996-01-01	0.0170
1996-07-01	0.0250
1996-10-01	-0.0200
1997-01-01	-0.0270
1997-04-01	-0.0200
1998-01-01	0.0350
1998-04-01	0.0250
1998-07-01	-0.0040
1999-01-01	-0.0060
1999-04-01	0.0110
1999-07-01	0.0300
2000-01-01	-0.0400
2000-04-01	0.0120
2000-07-01	0.0112
2000-10-01	0.1039
2001-01-01	0.0144
2001-04-01	0.0390
2001-07-01	-0.1201
2001-10-01	-0.0025
2002-01-01	-0.0064
2002-04-01	0.0049
2002-07-01	-0.0205
2002-10-01	0.0078
2003-01-01	0.0333
2003-04-01	0.0826
2003-07-01	0.0271
2003-10-01	-0.0029
2004-01-01	-0.0334
2004-04-01	0.1241
2004-07-01	0.3973
2004-10-01	0.1453
2005-01-01	0.2335
2005-04-01	0.0232
2005-07-01	-0.7483
2005-10-01	0.2052
2006-01-01	-0.1362
2006-04-01	0.0584
2006-07-01	0.0429
2006-10-01	-0.2221
2007-04-01	-0.2089
2007-07-01	0.0961
2007-10-01	0.1000
2008-01-01	0.3837
2008-04-01	0.3870
2008-07-01	-0.0068
2008-10-01	-0.1294
2009-01-01	-0.2538
2009-04-01	0.0007
2009-07-01	-0.0609
2009-10-01	0.0749
2010-01-01	0.1222
2010-04-01	0.0609
2010-07-01	0.2523
2010-10-01	0.8555
2011-01-01	1.0934
2011-04-01	2.9706
2011-07-01	0.6734
2011-10-01	2.6887
2012-01-01	8.2380
2012-04-01	1.5744
2012-07-01	-0.0945
2012-10-01	5.6021
2013-01-01	7.9454
2013-04-01	5.8097
2013-07-01	7.3090
2013-10-01	6.6899
2014-01-01	15.1835
2014-04-01	11.6834
2014-07-01	6.6960
2014-10-01	-3.3695
2015-01-01	0.0322
2015-04-01	-4.5172