Quarter	Billions of US Dollars
1993-07-01	0.47178
1993-10-01	2.16255
1994-01-01	0.60180
1994-04-01	0.52148
1994-07-01	0.39890
1994-10-01	-0.00547
1995-01-01	-0.05132
1995-04-01	1.07800
1995-07-01	0.16536
1995-10-01	0.03130
1996-01-01	0.83920
1996-04-01	1.12457
1996-07-01	0.77089
1996-10-01	0.55270
1997-01-01	0.73727
1997-04-01	1.59478
1997-07-01	1.58825
1997-10-01	0.58027
1998-01-01	-0.01701
1998-04-01	-0.28179
1998-07-01	-0.47252
1998-10-01	-0.41102
1999-01-01	-0.22708
1999-04-01	0.04294
1999-07-01	0.08743
1999-10-01	0.25181
2000-01-01	-0.00606
2000-04-01	0.66510
2000-07-01	0.75563
2000-10-01	-0.27292
2001-01-01	-0.09361
2001-04-01	0.92992
2001-07-01	-0.03078
2001-10-01	0.25575
2002-01-01	0.90638
2002-04-01	0.20078
2002-07-01	0.06323
2002-10-01	-0.67775
2003-01-01	-0.08323
2003-04-01	0.45363
2003-07-01	0.23573
2003-10-01	-0.49596
2004-01-01	0.38137
2004-04-01	2.46429
2004-07-01	-0.13632
2004-10-01	-0.27914
2005-01-01	-0.14059
2005-04-01	0.41203
2005-07-01	1.31580
2005-10-01	1.15081
2006-01-01	0.17522
2006-04-01	0.60773
2006-07-01	1.51844
2006-10-01	0.30365
2007-01-01	-1.07657
2007-04-01	0.83424
2007-07-01	-1.15766
2007-10-01	0.51936
2008-01-01	-0.49681
2008-04-01	0.54087
2008-07-01	-0.24672
2008-10-01	-0.29196
2009-01-01	0.84968
2009-04-01	2.03832
2009-07-01	1.85082
2009-10-01	1.38460
2010-01-01	-0.17969
2010-04-01	0.08673
2010-07-01	0.14250
2010-10-01	3.22779
2011-01-01	1.15682
2011-04-01	2.71635
2011-07-01	1.10656
2011-10-01	0.27349
2012-01-01	1.38471
2012-04-01	2.85351
2012-07-01	2.16413
2012-10-01	-0.53792
2013-01-01	1.38885
2013-04-01	-1.24192
2013-07-01	2.98735
2013-10-01	4.26880
2014-01-01	1.43456
2014-04-01	-0.15938
2014-07-01	1.17319
2014-10-01	1.79868
2015-01-01	-0.55631
2015-04-01	-0.28210