Quarter	Billions of US Dollars
1993-07-01	0.4804
1993-10-01	0.1213
1994-01-01	-0.1183
1994-04-01	-0.0384
1994-07-01	0.2262
1994-10-01	-0.0703
1995-01-01	0.0345
1995-04-01	-0.0400
1995-07-01	0.0310
1995-10-01	-0.1160
1996-01-01	0.3230
1996-04-01	-0.0587
1996-07-01	-0.0940
1996-10-01	0.4540
1997-01-01	-0.0416
1997-04-01	0.0240
1997-07-01	-0.1070
1997-10-01	-0.1100
1998-01-01	-0.1900
1998-04-01	0.0670
1998-07-01	0.0710
1998-10-01	-0.1222
1999-01-01	0.7921
1999-04-01	0.3382
1999-07-01	0.4791
1999-10-01	0.3655
2000-01-01	3.3062
2000-04-01	-0.1735
2000-07-01	0.2596
2000-10-01	-1.9308
2001-01-01	2.9493
2001-04-01	-0.0435
2001-07-01	-1.5756
2001-10-01	-2.0126
2002-01-01	0.8407
2002-04-01	0.7816
2002-07-01	-1.3105
2002-10-01	-1.7669
2003-01-01	3.5207
2003-04-01	-0.5612
2003-07-01	-2.1113
2003-10-01	-0.4120
2004-01-01	2.6001
2004-04-01	0.7807
2004-07-01	1.4988
2004-10-01	-2.5100
2005-01-01	3.7583
2005-04-01	1.7949
2005-07-01	-0.0838
2005-10-01	-1.7372
2006-01-01	6.9037
2006-04-01	1.8579
2006-07-01	-2.9881
2006-10-01	-3.7380
2007-01-01	9.6449
2007-04-01	9.4949
2007-07-01	3.1454
2007-10-01	-18.3335
2008-01-01	8.4875
2008-04-01	-2.3468
2008-07-01	1.7180
2008-10-01	5.1004
2009-01-01	0.0417
2009-04-01	-7.1090
2009-07-01	-4.6214
2009-10-01	-3.5761
2010-01-01	1.8377
2010-04-01	-0.8531
2010-07-01	0.7174
2010-10-01	-2.2397
2011-01-01	12.2146
2011-04-01	-5.3730
2011-07-01	1.7385
2011-10-01	-3.5787
2012-01-01	-0.2896
2012-04-01	-1.9592
2012-07-01	-0.2669
2012-10-01	1.5389
2013-01-01	1.7907
2013-04-01	-5.5691
2013-07-01	4.9783
2013-10-01	0.9039
2014-01-01	1.9473
2014-04-01	0.3556
2014-07-01	-2.0469
2014-10-01	-0.7365
2015-01-01	0.3251
2015-04-01	-3.1080