Quarter	Billions of US Dollars
1993-07-01	10.2212
1993-10-01	-0.4304
1994-01-01	0.0146
1994-04-01	0.4772
1994-07-01	0.4393
1994-10-01	0.1805
1995-01-01	-0.2272
1995-04-01	2.9512
1995-07-01	0.2699
1995-10-01	-0.9738
1996-01-01	-0.4800
1996-04-01	0.6471
1996-07-01	1.2804
1996-10-01	2.7965
1997-01-01	-1.0465
1997-04-01	-0.7924
1997-07-01	2.3466
1997-10-01	-0.4873
1998-01-01	-2.5110
1998-04-01	-2.3932
1998-07-01	1.7417
1998-10-01	-0.1739
1999-01-01	-1.4988
1999-04-01	-0.4585
1999-07-01	0.2040
1999-10-01	-0.1453
2000-01-01	-2.1521
2000-04-01	0.0720
2000-07-01	0.1751
2000-10-01	1.9186
2001-01-01	-0.9164
2001-04-01	0.4322
2001-07-01	-0.2672
2001-10-01	-0.1619
2002-01-01	-1.6345
2002-04-01	2.2539
2002-07-01	-0.4875
2002-10-01	-0.2668
2003-01-01	0.4651
2003-04-01	-0.1960
2003-07-01	-0.8072
2003-10-01	0.9759
2004-01-01	1.6659
2004-04-01	1.0030
2004-07-01	-1.0967
2004-10-01	-1.8499
2005-01-01	1.8528
2005-04-01	0.7703
2005-07-01	1.4492
2005-10-01	-3.4204
2006-01-01	1.5605
2006-04-01	-2.2460
2006-07-01	1.1234
2006-10-01	-0.7767
2007-01-01	1.8363
2007-04-01	2.0740
2007-07-01	-6.3994
2007-10-01	3.2413
2008-01-01	3.4312
2008-04-01	2.0740
2008-07-01	-3.9085
2008-10-01	-0.2262
2009-01-01	-0.4877
2009-04-01	1.7744
2009-07-01	0.8328
2009-10-01	-1.5533
2010-01-01	1.0496
2010-04-01	-3.8671
2010-07-01	3.4519
2010-10-01	0.5747
2011-01-01	2.2783
2011-04-01	-0.6734
2011-07-01	4.8702
2011-10-01	2.0386
2012-01-01	15.1381
2012-04-01	2.9202
2012-07-01	-0.9492
2012-10-01	0.2301
2013-01-01	-0.1944
2013-04-01	1.9548
2013-07-01	1.2406
2013-10-01	3.2546
2014-01-01	-6.8964
2014-04-01	7.1911
2014-07-01	4.7090
2014-10-01	1.4501
2015-01-01	-7.4317
2015-04-01	0.2042