Quarter	Billions of US Dollars
1993-07-01	0.32156
1993-10-01	-0.03081
1994-01-01	-0.34404
1994-04-01	0.15943
1994-07-01	-0.11153
1994-10-01	-0.00544
1995-01-01	-0.03251
1995-04-01	0.02561
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	-0.02996
1997-10-01	0.00331
1998-01-01	-0.00832
1998-04-01	-0.02570
1998-07-01	-0.02627
1998-10-01	-0.07025
1999-01-01	0.03859
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	0.34445
2003-10-01	0.37512
2004-01-01	1.05071
2004-04-01	0.16897
2004-07-01	0.27214
2004-10-01	0.16983
2005-01-01	0.58773
2005-04-01	0.31448
2005-07-01	0.24813
2005-10-01	-0.50940
2006-01-01	0.56159
2006-04-01	0.24535
2006-07-01	0.15436
2006-10-01	-0.13226
2007-01-01	1.59585
2007-04-01	-0.00103
2007-07-01	-2.02565
2007-10-01	-0.19498
2008-01-01	1.07035
2008-04-01	-0.65522
2008-07-01	1.43050
2008-10-01	-3.66145
2009-01-01	-0.72968
2009-04-01	0.09812
2009-07-01	-0.34663
2009-10-01	0.32898
2010-01-01	-0.47929
2010-04-01	0.32639
2010-07-01	-0.10892
2010-10-01	-0.27081
2011-01-01	0.16503
2011-04-01	0.34359
2011-07-01	0.04100
2011-10-01	0.21522
2012-01-01	-0.29571
2012-04-01	-0.46999
2012-07-01	0.20000
2012-10-01	0.06800
2013-01-01	0.10885
2013-04-01	0.22163
2013-07-01	0.16272
2013-10-01	-0.16395
2014-01-01	-0.09104
2014-04-01	0.02778
2014-07-01	-0.64020
2014-10-01	0.02090
2015-01-01	-0.07100
2015-04-01	-0.00949