Quarter	Billions of US Dollars
1993-07-01	19.9431
1993-10-01	-0.7250
1994-01-01	0.8651
1994-04-01	-3.7556
1994-07-01	-1.1859
1994-10-01	-2.3584
1995-01-01	1.0697
1995-04-01	1.5864
1995-07-01	1.7417
1995-10-01	-1.1991
1996-01-01	1.3045
1996-04-01	0.5832
1996-07-01	3.7606
1996-10-01	-2.0055
1997-01-01	1.8951
1997-04-01	-0.4011
1997-07-01	2.5196
1997-10-01	-4.3852
1998-01-01	2.6020
1998-04-01	-4.1281
1998-07-01	4.6512
1998-10-01	0.3047
1999-01-01	5.4775
1999-04-01	-4.2821
1999-07-01	3.8235
1999-10-01	1.3823
2000-01-01	0.4466
2000-04-01	-4.7854
2000-07-01	3.3380
2000-10-01	3.5817
2001-01-01	0.8727
2001-04-01	-1.6994
2001-07-01	-0.9480
2001-10-01	-0.4477
2002-01-01	2.2226
2002-04-01	3.3012
2002-07-01	0.1666
2002-10-01	-1.6663
2003-01-01	-0.1157
2003-04-01	0.4585
2003-07-01	-2.2628
2003-10-01	10.7382
2004-01-01	1.5993
2004-04-01	-5.1596
2004-07-01	4.5039
2004-10-01	1.4899
2005-01-01	-5.1156
2005-04-01	3.0866
2005-07-01	0.5045
2005-10-01	1.9927
2006-01-01	6.5152
2006-04-01	7.3505
2006-07-01	4.6818
2006-10-01	0.5406
2007-01-01	0.7509
2007-04-01	10.1002
2007-07-01	-5.3613
2007-10-01	-9.7358
2008-01-01	19.6454
2008-04-01	2.3018
2008-07-01	-18.3013
2008-10-01	-28.9659
2009-01-01	-3.4258
2009-04-01	7.8781
2009-07-01	7.7309
2009-10-01	-6.4629
2010-01-01	-0.6899
2010-04-01	-0.5701
2010-07-01	-0.9546
2010-10-01	-0.1211
2011-01-01	-3.7161
2011-04-01	7.4234
2011-07-01	-8.5277
2011-10-01	-3.1516
2012-01-01	0.5893
2012-04-01	1.0710
2012-07-01	-3.5555
2012-10-01	6.1253
2013-01-01	2.5299
2013-04-01	-0.8824
2013-07-01	4.2204
2013-10-01	-2.7645
2014-01-01	1.1506
2014-04-01	6.8310
2014-07-01	-3.9195
2014-10-01	-3.5707
2015-01-01	-2.5920
2015-04-01	-2.7991