Quarter	Billions of US Dollars
1993-07-01	0.20150
1993-10-01	-0.03250
1994-01-01	0.07720
1994-04-01	0.00524
1994-07-01	0.01452
1994-10-01	0.00066
1995-01-01	-0.02951
1995-04-01	0.02706
1995-07-01	0.02605
1995-10-01	-0.03571
1996-01-01	-0.01117
1996-04-01	-0.01791
1996-07-01	0.01148
1996-10-01	0.01403
1997-01-01	0.01558
1997-04-01	0.03362
1997-07-01	-0.03518
1997-10-01	-0.05058
1998-01-01	-0.00828
1998-04-01	0.00253
1998-07-01	-0.01485
1998-10-01	-0.05586
1999-01-01	0.04362
1999-04-01	-0.01691
1999-07-01	-0.00690
1999-10-01	0.01817
2000-01-01	0.00247
2000-04-01	-0.03920
2000-07-01	0.02442
2000-10-01	-0.07255
2001-01-01	0.07982
2001-04-01	0.01004
2001-07-01	-0.04628
2001-10-01	-0.02910
2002-01-01	0.02191
2002-04-01	-0.00872
2002-07-01	0.06786
2002-10-01	-0.16495
2003-01-01	-0.03649
2003-07-01	0.11240
2003-10-01	0.10936
2004-01-01	0.03501
2004-04-01	0.24683
2004-07-01	-0.21859
2004-10-01	0.18622
2005-01-01	-0.03432
2005-04-01	-0.27788
2005-07-01	-0.00058
2005-10-01	0.00715
2006-01-01	-0.01365
2006-04-01	0.12124
2006-07-01	0.07659
2006-10-01	-0.02068
2007-01-01	0.35205
2007-04-01	0.11745
2007-07-01	-0.06253
2007-10-01	-0.54138
2008-01-01	0.17516
2008-04-01	-0.12065
2008-07-01	0.69651
2008-10-01	-0.30881
2009-01-01	-0.27144
2009-04-01	0.36958
2009-07-01	-0.25512
2009-10-01	0.43864
2010-01-01	-0.48533
2010-04-01	0.32639
2010-07-01	1.18222
2010-10-01	-0.27081
2011-01-01	0.16503
2011-04-01	0.34359
2011-07-01	0.04100
2011-10-01	-1.13245
2012-01-01	-0.29571
2012-04-01	-0.66999
2012-07-01	-0.04000
2012-10-01	0.01700
2013-01-01	0.02660
2013-04-01	0.26263
2013-07-01	-0.11258
2013-10-01	-0.07715
2014-01-01	0.06054
2014-04-01	0.10475
2014-07-01	-0.27006
2014-10-01	0.02796
2015-01-01	-0.07504