Quarter	Billions of US Dollars
1993-07-01	2.03095
1993-10-01	0.38069
1994-01-01	0.79851
1994-04-01	0.15763
1994-07-01	0.58828
1994-10-01	-1.34941
1995-01-01	-2.37959
1995-04-01	-0.78157
1995-07-01	0.52050
1995-10-01	-0.19997
1996-01-01	0.05800
1996-04-01	0.99847
1996-07-01	-1.06535
1996-10-01	-0.07294
1997-01-01	-0.09174
1997-04-01	0.01053
1997-07-01	-0.04325
1997-10-01	-0.05684
1998-01-01	0.11800
1998-04-01	-0.06139
1998-07-01	0.01318
1998-10-01	-0.14565
1999-01-01	0.03820
1999-04-01	0.08195
1999-07-01	0.03727
1999-10-01	0.06773
2000-01-01	-0.01232
2000-04-01	0.03257
2000-07-01	0.03877
2000-10-01	-0.01951
2001-01-01	0.14180
2001-04-01	0.02933
2001-07-01	-0.15069
2001-10-01	-0.09221
2002-01-01	-0.06488
2002-04-01	0.04960
2002-07-01	-0.03895
2002-10-01	-0.08777
2003-01-01	-0.02046
2003-04-01	-0.10178
2003-07-01	-0.11334
2003-10-01	0.00070
2004-01-01	-0.04230
2004-04-01	-0.04037
2004-07-01	0.02205
2004-10-01	0.06361
2005-01-01	0.06853
2005-04-01	-0.01248
2005-07-01	-0.00112
2005-10-01	-0.05502
2006-01-01	0.04624
2006-04-01	0.05046
2006-07-01	0.08041
2006-10-01	-0.02463
2007-01-01	-0.14414
2007-04-01	-0.12400
2007-07-01	0.01114
2007-10-01	-0.00495
2008-01-01	0.00150
2008-04-01	0.00200
2008-07-01	0.00600
2008-10-01	-0.01750
2009-01-01	-0.00950
2009-04-01	0.00200
2009-07-01	-0.00600
2009-10-01	0.05250
2010-01-01	-0.03500
2010-07-01	0.00060
2010-10-01	-0.07100
2011-01-01	0.05675
2011-04-01	0.00925
2011-07-01	-0.02010
2012-01-01	0.02650
2012-07-01	0.00525
2012-10-01	-0.03175
2013-01-01	0.01060
2013-04-01	0.02742
2013-07-01	0.01792
2013-10-01	-0.02100
2014-01-01	0.01000
2014-04-01	-0.00769
2014-07-01	0.05308
2014-10-01	0.04500
2015-01-01	-0.02700