Quarter	Billions of US Dollars
1987-01-01	0.7769
1987-04-01	-0.0508
1987-07-01	0.1662
1987-10-01	-0.0196
1988-01-01	-0.2784
1988-04-01	0.6478
1988-07-01	0.2827
1988-10-01	0.0332
1989-01-01	0.5730
1989-04-01	0.1371
1989-07-01	-0.1983
1989-10-01	0.4813
1990-01-01	-0.4749
1990-04-01	-0.0370
1990-07-01	-0.0903
1990-10-01	-0.1094
1991-01-01	-0.6657
1991-04-01	-0.2484
1991-07-01	-0.2831
1991-10-01	-0.3921
1992-01-01	-1.2342
1992-04-01	-0.2993
1992-07-01	-0.1005
1992-10-01	-0.4241
1993-01-01	-0.6598
1993-04-01	-1.0356
1993-07-01	-0.1483
1993-10-01	-0.1909
1994-01-01	-0.2561
1994-04-01	-0.3320
1994-07-01	-0.1558
1994-10-01	-0.3169
1995-01-01	-0.0828
1995-04-01	-0.0930
1995-07-01	-0.0258
1995-10-01	0.0538
1996-01-01	0.4572
1996-04-01	-0.0065
1996-07-01	0.1122
1996-10-01	0.7677
1997-01-01	0.2446
1997-04-01	0.1542
1997-07-01	2.3928
1997-10-01	0.5642
1998-01-01	0.6097
1998-04-01	2.6050
1998-07-01	0.7293
1998-10-01	-0.4325
1999-01-01	0.6855
1999-04-01	0.8847
1999-07-01	0.5309
1999-10-01	-0.4105
2000-01-01	1.0710
2000-04-01	1.3630
2000-07-01	0.5949
2000-10-01	0.9998
2001-01-01	1.7336
2001-04-01	0.2077
2001-07-01	0.5093
2001-10-01	1.1103
2002-01-01	0.1180
2002-04-01	0.6115
2002-07-01	-0.1582
2002-10-01	0.5369
2003-01-01	3.0978
2003-04-01	1.3002
2003-07-01	2.5431
2003-10-01	1.9689
2004-01-01	0.9269
2004-04-01	0.9721
2004-07-01	0.0745
2004-10-01	4.4124
2005-01-01	1.1671
2005-04-01	1.9076
2005-07-01	-0.1859
2005-10-01	3.4794
2006-01-01	3.5330
2006-04-01	7.0900
2006-07-01	4.2187
2006-10-01	5.3336
2007-01-01	5.7187
2007-04-01	-0.4776
2007-07-01	2.5142
2007-10-01	9.7565
2008-01-01	12.4447
2008-04-01	9.4262
2008-07-01	0.7635
2008-10-01	2.8161
2009-01-01	2.0903
2009-04-01	0.2779
2009-07-01	3.5528
2009-10-01	-1.8922
2010-01-01	6.8660
2010-04-01	7.2397
2010-07-01	3.8224
2010-10-01	-0.2706
2011-01-01	18.1306
2011-04-01	5.2778
2011-07-01	5.5301
2011-10-01	10.6747
2012-01-01	21.1311
2012-04-01	10.8428
2012-07-01	1.6169
2012-10-01	-1.9481
2013-01-01	2.3242
2013-04-01	8.1703
2013-07-01	-0.0522
2013-10-01	5.9785
2014-01-01	1.8940
2014-04-01	-6.6316
2014-07-01	-0.2928
2014-10-01	3.1583
2015-01-01	1.1612
2015-04-01	-6.4267