Quarter	Billions of US Dollars
1993-07-01	0.45892
1993-10-01	0.59231
1994-01-01	-0.04953
1994-04-01	-0.02728
1994-07-01	-0.14416
1994-10-01	-0.04670
1995-01-01	-0.21012
1995-04-01	-0.00460
1995-07-01	0.14160
1995-10-01	0.68035
1996-01-01	0.76968
1996-04-01	1.63004
1996-07-01	0.87449
1996-10-01	2.25708
1997-01-01	-0.15029
1997-04-01	1.45696
1997-07-01	1.63257
1997-10-01	0.21663
1998-01-01	0.83350
1998-04-01	0.26790
1998-07-01	-0.68435
1998-10-01	-0.61647
1999-01-01	-0.88503
1999-04-01	-0.19641
1999-07-01	-0.08312
1999-10-01	0.20354
2000-01-01	0.44620
2000-04-01	0.47238
2000-07-01	0.09590
2000-10-01	-0.30947
2001-01-01	0.49876
2001-04-01	-0.96903
2001-07-01	-0.26293
2001-10-01	-0.43481
2002-01-01	-0.38775
2002-04-01	0.40973
2002-07-01	0.25504
2002-10-01	-0.26205
2003-01-01	0.31187
2003-04-01	0.55698
2003-07-01	0.24120
2003-10-01	0.92232
2004-01-01	0.73335
2004-04-01	-1.09486
2004-07-01	-1.11430
2004-10-01	-1.33659
2005-01-01	-0.28440
2005-04-01	-0.50003
2005-07-01	0.04674
2005-10-01	1.00059
2006-01-01	1.60555
2006-04-01	0.33518
2006-07-01	1.43185
2006-10-01	-0.13349
2007-01-01	0.73257
2007-04-01	0.56486
2007-07-01	-0.25273
2007-10-01	-0.02512
2008-01-01	-0.61292
2008-04-01	-0.23376
2008-07-01	-0.71902
2008-10-01	-0.47446
2009-01-01	-0.33892
2009-04-01	1.28241
2009-07-01	1.73044
2009-10-01	0.65296
2010-01-01	2.58177
2010-04-01	0.06210
2010-07-01	1.32600
2010-10-01	2.94481
2011-01-01	-0.92211
2011-04-01	4.10672
2011-07-01	1.95293
2011-10-01	1.75261
2012-01-01	2.75263
2012-04-01	0.93843
2012-07-01	2.36319
2012-10-01	1.55380
2013-01-01	0.90107
2013-04-01	1.37657
2013-07-01	-1.15727
2013-10-01	0.19216
2014-01-01	-0.52624
2014-04-01	0.98163
2014-07-01	1.02310
2014-10-01	0.84505
2015-01-01	-0.88153
2015-04-01	1.69436