Quarter	Billions of US Dollars
1993-07-01	0.12633
1993-10-01	-0.10936
1994-01-01	-0.34451
1994-04-01	0.00180
1994-07-01	-0.04485
1994-10-01	-0.18185
1995-01-01	-0.02500
1995-04-01	-0.10328
1995-07-01	-0.01815
1995-10-01	-0.21883
1996-01-01	0.55068
1996-04-01	-0.15698
1996-07-01	-0.42126
1996-10-01	-0.12220
1997-01-01	0.33361
1997-04-01	0.15000
1997-07-01	1.25738
1997-10-01	0.04882
1998-01-01	0.90000
1998-07-01	0.32948
1998-10-01	-0.37470
1999-04-01	0.76523
1999-07-01	0.49386
1999-10-01	0.28522
2000-01-01	-0.09209
2000-04-01	0.61283
2000-07-01	5.02495
2000-10-01	0.16964
2001-01-01	0.55030
2001-04-01	-0.27200
2001-07-01	0.83171
2001-10-01	3.30041
2002-01-01	0.79348
2002-04-01	0.67741
2002-07-01	-0.78829
2002-10-01	-0.36338
2003-01-01	1.68729
2003-04-01	0.45308
2003-07-01	0.95797
2003-10-01	1.63134
2004-01-01	0.64561
2004-04-01	-0.23744
2004-07-01	0.77950
2004-10-01	-2.02203
2005-01-01	0.68421
2005-04-01	-0.48141
2005-07-01	-2.46810
2005-10-01	0.23288
2006-01-01	4.80680
2006-04-01	0.37594
2006-07-01	-1.27428
2006-10-01	-1.45985
2007-01-01	-0.31095
2007-04-01	0.44527
2007-07-01	0.37587
2007-10-01	-0.05942
2008-01-01	-0.39910
2008-04-01	-0.67544
2008-07-01	-5.84646
2008-10-01	0.24370
2009-01-01	-2.60263
2009-04-01	-2.43265
2009-07-01	0.90068
2009-10-01	1.41761
2010-01-01	1.91762
2010-04-01	1.73172
2010-07-01	-2.99580
2010-10-01	1.46092
2011-01-01	0.95056
2011-04-01	0.33876
2011-07-01	0.31675
2011-10-01	0.30794
2012-01-01	0.97729
2012-04-01	-1.31922
2012-07-01	-0.90531
2012-10-01	1.26735
2013-01-01	2.66218
2013-04-01	1.65231
2013-07-01	0.90152
2013-10-01	5.56503
2014-01-01	7.86143
2014-04-01	2.00639
2014-07-01	4.86837
2014-10-01	-1.96068
2015-01-01	6.69622
2015-04-01	1.68303