Quarter	Billions of US Dollars
1993-07-01	0.28861
1993-10-01	0.20325
1994-01-01	1.10741
1994-04-01	0.03410
1994-07-01	0.02931
1994-10-01	0.61492
1995-01-01	-0.10574
1995-04-01	0.01776
1995-07-01	0.11394
1995-10-01	-0.00851
1996-01-01	0.59534
1996-04-01	0.26158
1996-07-01	0.06203
1996-10-01	0.40107
1997-01-01	0.55499
1997-04-01	1.24521
1997-07-01	0.14531
1997-10-01	0.83134
1998-01-01	-0.05090
1998-04-01	0.55694
1998-07-01	0.94656
1998-10-01	0.39778
1999-01-01	-1.08257
1999-04-01	0.73156
1999-07-01	0.24938
1999-10-01	-0.17005
2000-01-01	0.51013
2000-04-01	0.47024
2000-07-01	-0.16026
2000-10-01	-0.05140
2001-01-01	0.58565
2001-04-01	0.14923
2001-07-01	-0.73404
2001-10-01	0.45788
2002-01-01	1.07731
2002-04-01	0.59727
2002-07-01	0.34761
2002-10-01	-0.78037
2003-01-01	1.28879
2003-04-01	0.74490
2003-07-01	1.44914
2003-10-01	0.61752
2004-01-01	0.50818
2004-04-01	0.06961
2004-07-01	1.91369
2004-10-01	0.66525
2005-01-01	-1.64960
2005-04-01	-0.29272
2005-07-01	-0.14366
2005-10-01	0.29716
2006-01-01	4.53041
2006-04-01	0.97450
2006-07-01	-0.54853
2006-10-01	1.76551
2007-01-01	0.43410
2007-04-01	0.34108
2007-07-01	-0.29726
2007-10-01	0.37731
2008-01-01	1.27411
2008-04-01	-3.84790
2008-07-01	-0.14917
2008-10-01	-0.40504
2009-01-01	-2.20723
2009-04-01	-1.26910
2009-07-01	-0.37066
2009-10-01	-2.26607
2010-01-01	-3.03136
2010-04-01	-0.35485
2010-07-01	-0.09839
2010-10-01	1.66805
2011-01-01	-0.91809
2011-04-01	1.30464
2011-07-01	-0.82108
2011-10-01	-0.21007
2012-01-01	3.19370
2012-04-01	0.75475
2012-07-01	1.21880
2012-10-01	-0.86960
2013-01-01	-2.10361
2013-04-01	-0.90658
2013-07-01	-0.59951
2013-10-01	-1.63295
2014-01-01	-3.08936
2014-04-01	-0.18666
2014-07-01	-1.16978
2014-10-01	-0.13111
2015-01-01	-1.62146
2015-04-01	-1.94062