Quarter	Billions of US Dollars
1993-07-01	1.78128
1993-10-01	-0.18437
1994-01-01	0.10443
1994-04-01	-0.78281
1994-07-01	-1.08128
1994-10-01	-0.03437
1995-01-01	-0.02943
1995-04-01	-0.01400
1995-07-01	-0.00740
1995-10-01	0.00476
1996-01-01	-0.01100
1997-04-01	0.02500
1997-07-01	-0.02500
1997-10-01	0.20975
1998-01-01	-0.08800
1998-04-01	0.03763
1998-07-01	0.40772
1998-10-01	-0.25788
1999-01-01	0.00385
1999-04-01	0.08152
1999-07-01	0.03922
1999-10-01	0.07653
2000-01-01	0.00187
2000-04-01	0.01719
2000-07-01	-0.15572
2000-10-01	-0.00799
2001-01-01	0.15243
2001-04-01	-0.17129
2001-07-01	0.04936
2001-10-01	0.13144
2002-01-01	0.04941
2002-04-01	0.02413
2002-07-01	0.13180
2002-10-01	0.24656
2003-01-01	0.05693
2003-04-01	0.07858
2003-07-01	-0.19450
2003-10-01	-0.04298
2004-01-01	0.00390
2004-04-01	0.30425
2004-07-01	0.09211
2004-10-01	0.32391
2005-01-01	0.07882
2005-04-01	-0.18841
2005-07-01	-0.09837
2005-10-01	0.01622
2006-01-01	-0.07961
2006-04-01	0.11862
2006-07-01	1.74080
2006-10-01	-1.68836
2007-01-01	-0.22807
2007-04-01	0.03680
2007-07-01	0.26213
2007-10-01	0.30568
2008-01-01	0.13884
2008-04-01	-0.06054
2008-07-01	0.35012
2008-10-01	-0.73949
2009-01-01	-0.31148
2009-04-01	0.23120
2009-07-01	0.38576
2009-10-01	0.12012
2010-01-01	0.32904
2010-04-01	-0.50633
2010-07-01	-0.35367
2010-10-01	-0.30007
2011-01-01	-0.65395
2011-04-01	0.08063
2011-07-01	-0.29923
2011-10-01	-0.12131
2012-01-01	-0.13762
2012-04-01	0.01929
2012-07-01	0.12529
2012-10-01	0.19705
2013-01-01	0.09051
2013-04-01	0.40774
2013-07-01	0.27261
2013-10-01	0.05430
2014-01-01	1.24978
2014-04-01	1.53607
2014-07-01	0.40596
2014-10-01	-0.57462
2015-01-01	-0.69696
2015-04-01	0.67768