Quarter	Billions of US Dollars
1988-10-01	-0.0300
1990-10-01	-0.0600
1991-10-01	0.2163
1993-07-01	0.1500
1996-04-01	0.2200
1996-07-01	-0.1500
1996-10-01	-0.1287
1997-01-01	0.1426
1997-04-01	0.0583
1997-07-01	0.0475
1997-10-01	-0.0225
1998-01-01	-0.0033
1998-04-01	0.0479
1998-07-01	0.0619
1998-10-01	0.0485
1999-01-01	0.1394
1999-04-01	0.1305
1999-07-01	0.0141
1999-10-01	0.4778
2000-01-01	0.6839
2000-04-01	0.6902
2000-07-01	0.3415
2000-10-01	0.4530
2001-01-01	0.7120
2001-04-01	0.5998
2001-07-01	0.1962
2001-10-01	0.3300
2002-01-01	2.0379
2002-04-01	2.2440
2002-07-01	0.2321
2002-10-01	0.0851
2003-01-01	1.0291
2003-04-01	-0.4551
2003-07-01	2.0172
2003-10-01	1.0329
2004-01-01	-1.4222
2004-04-01	0.0992
2004-07-01	-0.1780
2004-10-01	-1.0010
2005-01-01	-1.0474
2005-04-01	0.1208
2005-07-01	-0.7404
2005-10-01	1.5633
2006-01-01	-0.0021
2006-04-01	0.3506
2006-07-01	0.4478
2006-10-01	2.6614
2007-01-01	-0.8556
2007-04-01	8.2844
2007-07-01	-1.1376
2007-10-01	1.0455
2008-01-01	1.8427
2008-04-01	12.4100
2008-07-01	2.1856
2008-10-01	-1.7503
2009-01-01	3.5961
2009-04-01	6.7743
2009-07-01	6.8216
2009-10-01	5.8099
2010-01-01	5.3606
2010-04-01	-4.3403
2010-07-01	-2.4631
2010-10-01	2.5858
2011-01-01	-0.7938
2011-04-01	-0.1220
2011-07-01	-1.4480
2011-10-01	0.9052
2012-01-01	-6.9051
2012-04-01	-5.1333
2012-07-01	-3.1455
2012-10-01	0.5326
2013-01-01	-1.9600
2013-04-01	-7.3711
2013-07-01	-0.4758
2013-10-01	0.1520
2014-01-01	-1.4729
2014-04-01	-6.9608
2014-07-01	-1.7531
2014-10-01	-2.6414
2015-01-01	-0.8639
2015-04-01	-0.0866