Quarter	Billions of US Dollars
1993-07-01	6.16142
1993-10-01	0.22202
1994-01-01	1.16759
1994-04-01	-1.03641
1994-07-01	0.12228
1994-10-01	-1.05449
1995-01-01	-4.34004
1995-04-01	-0.16461
1995-07-01	2.25459
1995-10-01	1.21961
1996-01-01	0.96623
1996-04-01	1.89743
1996-07-01	-0.01514
1996-10-01	1.35192
1997-01-01	-1.00698
1997-04-01	-1.15679
1997-07-01	0.86168
1997-10-01	-2.48287
1998-01-01	2.61067
1998-04-01	0.45960
1998-07-01	-3.50979
1998-10-01	-1.37046
1999-01-01	-1.68219
1999-04-01	0.69718
1999-07-01	-0.07085
1999-10-01	0.82700
2000-01-01	0.47957
2000-04-01	0.51473
2000-07-01	-0.05235
2000-10-01	-0.97301
2001-01-01	-0.36004
2001-04-01	-0.13335
2001-07-01	-1.57662
2001-10-01	0.63691
2002-01-01	-0.66547
2002-04-01	-0.09326
2002-07-01	0.76019
2002-10-01	-0.03637
2003-01-01	2.01686
2003-04-01	-0.09976
2003-07-01	0.34291
2003-10-01	-1.23575
2004-01-01	-0.88693
2004-04-01	-1.18166
2004-07-01	-0.29870
2004-10-01	0.55703
2005-01-01	0.22573
2005-04-01	0.46825
2005-07-01	0.23604
2005-10-01	0.72079
2006-01-01	1.63969
2006-04-01	0.50237
2006-07-01	2.34221
2006-10-01	1.46953
2007-01-01	0.52091
2007-04-01	0.91384
2007-07-01	-0.44714
2007-10-01	-1.19986
2008-01-01	1.74073
2008-04-01	1.31922
2008-07-01	1.01239
2008-10-01	-9.26375
2009-01-01	0.53018
2009-04-01	1.73738
2009-07-01	1.05414
2009-10-01	-0.32249
2010-01-01	-0.94275
2010-04-01	-0.47532
2010-07-01	0.11650
2010-10-01	-1.71838
2011-01-01	0.67383
2011-04-01	0.00244
2011-07-01	0.58471
2011-10-01	1.11333
2012-01-01	1.75283
2012-04-01	1.40466
2012-07-01	0.69801
2012-10-01	-0.26243
2013-01-01	0.94162
2013-04-01	1.28368
2013-07-01	1.79088
2013-10-01	1.14732
2014-01-01	-0.37200
2014-04-01	1.14550
2014-07-01	0.24481
2014-10-01	1.40795
2015-01-01	1.23467
2015-04-01	1.62230