Quarter	Billions of US Dollars
1993-07-01	0.44650
1993-10-01	0.22361
1994-01-01	-0.07290
1994-04-01	0.41825
1994-07-01	0.04766
1994-10-01	0.45764
1995-01-01	-0.09067
1995-04-01	0.28250
1995-07-01	0.74698
1995-10-01	0.79028
1996-01-01	1.96167
1996-04-01	2.46164
1996-07-01	-2.25448
1996-10-01	0.16080
1997-01-01	0.30656
1997-04-01	-0.13993
1997-07-01	1.20455
1997-10-01	-1.41589
1998-01-01	2.34959
1998-04-01	0.32530
1998-07-01	-2.28917
1998-10-01	-1.99915
1999-01-01	-1.70550
1999-04-01	0.36344
1999-07-01	-0.20037
1999-10-01	-0.06955
2000-01-01	0.85941
2000-04-01	-0.33797
2000-07-01	0.05145
2000-10-01	-0.27394
2001-01-01	-0.44189
2001-04-01	-0.42499
2001-07-01	-0.40047
2001-10-01	-0.10363
2002-01-01	-0.23973
2002-04-01	-0.37015
2002-07-01	-0.16778
2002-10-01	0.65037
2003-01-01	2.23812
2003-04-01	-0.06582
2003-07-01	0.46818
2003-10-01	-1.03655
2004-01-01	-0.98130
2004-04-01	-0.70195
2004-07-01	-0.53562
2004-10-01	0.38202
2005-01-01	-0.15436
2005-04-01	-0.10799
2005-07-01	-0.05802
2005-10-01	0.00977
2006-01-01	0.05201
2006-04-01	0.50696
2006-07-01	-0.46838
2006-10-01	-0.14066
2007-01-01	2.28201
2007-04-01	0.89690
2007-07-01	-2.46971
2007-10-01	1.53418
2008-01-01	0.27911
2008-04-01	0.93449
2008-07-01	0.77780
2008-10-01	-0.83207
2009-01-01	-0.50743
2009-04-01	-1.03408
2009-07-01	-0.10827
2009-10-01	-0.44254
2010-01-01	0.03564
2010-04-01	0.39206
2010-07-01	-0.05336
2010-10-01	-0.09666
2011-01-01	-0.15709
2011-04-01	0.59927
2011-07-01	0.30992
2011-10-01	0.67018
2012-01-01	2.48834
2012-04-01	3.07094
2012-07-01	0.70566
2012-10-01	2.05049
2013-01-01	1.49006
2013-04-01	-0.50055
2013-07-01	-1.21522
2013-10-01	-1.72721
2014-01-01	-0.10551
2014-04-01	0.55561
2014-07-01	-2.02406
2014-10-01	0.00384
2015-01-01	-1.02078
2015-04-01	-0.31804