Quarter	Billions of US Dollars
1993-07-01	0.0937
1993-10-01	-0.0250
1994-01-01	-0.0416
1994-04-01	-0.0390
1994-07-01	-0.0024
1994-10-01	0.0356
1995-01-01	0.3180
1995-04-01	-0.2465
1995-07-01	0.0025
1995-10-01	0.0259
1996-01-01	0.1616
1996-04-01	-0.1065
1996-07-01	-0.1097
1996-10-01	-0.0188
1997-01-01	0.0070
1997-04-01	0.0402
1997-07-01	-0.0224
1997-10-01	0.1132
1998-01-01	0.2486
1998-04-01	-0.1538
1998-07-01	0.5092
1998-10-01	-0.3809
1999-01-01	1.7010
1999-04-01	0.5050
1999-07-01	-0.5324
1999-10-01	0.9913
2000-01-01	0.8765
2000-04-01	2.6219
2000-07-01	-2.3502
2000-10-01	-0.1414
2001-01-01	1.3920
2001-04-01	-1.3665
2001-07-01	2.1479
2001-10-01	2.4150
2002-01-01	1.4659
2002-04-01	-1.4304
2002-07-01	0.5882
2002-10-01	2.7067
2003-01-01	0.7506
2003-04-01	1.7647
2003-07-01	-2.2085
2003-10-01	-1.3748
2004-01-01	3.9133
2004-04-01	0.4881
2004-07-01	4.4179
2004-10-01	1.9058
2005-01-01	6.3918
2005-04-01	0.2987
2005-07-01	2.7722
2005-10-01	1.4648
2006-01-01	2.6200
2006-04-01	0.4786
2006-07-01	7.7252
2006-10-01	0.6001
2007-01-01	9.5510
2007-04-01	-3.5223
2007-07-01	9.7392
2007-10-01	-27.1936
2008-01-01	10.0398
2008-04-01	2.3274
2008-07-01	2.6983
2008-10-01	11.3790
2009-01-01	-3.1586
2009-04-01	-6.4483
2009-07-01	-2.3451
2009-10-01	-4.1327
2010-01-01	-9.3375
2010-04-01	4.6710
2010-07-01	-7.6145
2010-10-01	7.4827
2011-01-01	-22.6781
2011-04-01	-6.5526
2011-07-01	-2.1633
2011-10-01	-3.1506
2012-01-01	36.4956
2012-04-01	14.5552
2012-07-01	-11.6898
2012-10-01	-0.2392
2013-01-01	-5.2777
2013-04-01	-3.6953
2013-07-01	-1.0287
2013-10-01	-0.3257
2014-01-01	-34.9907
2014-04-01	0.0143
2014-07-01	1.1992
2014-10-01	0.7173
2015-01-01	0.8726
2015-04-01	-0.7252