Quarter	Billions of US Dollars
1975-04-01	0.1028
1976-10-01	0.0640
1979-01-01	0.1000
1980-04-01	0.2351
1980-10-01	0.2000
1983-04-01	-0.0402
1983-07-01	0.0520
1984-01-01	0.1490
1985-07-01	-0.3000
1985-10-01	-0.2402
1986-07-01	0.0270
1986-10-01	-0.0080
1987-01-01	0.0290
1987-10-01	0.1369
1989-04-01	-0.1625
1989-07-01	0.0294
1990-07-01	0.0920
1991-07-01	0.5750
1992-07-01	-0.0920
1992-10-01	0.0367
1993-01-01	0.2000
1993-07-01	0.0126
1993-10-01	0.0592
1994-01-01	0.1200
1994-04-01	0.1819
1994-10-01	-0.2006
1995-04-01	0.0817
1995-07-01	0.6566
1995-10-01	0.2555
1996-01-01	0.2412
1996-04-01	0.6426
1996-07-01	0.3874
1996-10-01	0.2580
1997-01-01	0.8338
1997-04-01	0.1273
1997-07-01	0.4674
1997-10-01	-0.0577
1998-01-01	0.4258
1998-04-01	2.2695
1998-07-01	-0.4986
1998-10-01	-0.0638
1999-01-01	-0.1360
1999-04-01	-0.0348
1999-07-01	0.0001
1999-10-01	-0.2322
2000-01-01	-0.3092
2000-04-01	-0.1529
2000-07-01	0.3801
2000-10-01	-0.0950
2001-01-01	1.4465
2001-04-01	-0.2179
2001-07-01	0.2371
2001-10-01	1.3630
2002-01-01	-0.0345
2002-04-01	0.0756
2002-07-01	-0.3332
2002-10-01	-0.2248
2003-01-01	1.6365
2003-04-01	2.1285
2003-07-01	1.7071
2003-10-01	5.5281
2004-01-01	0.6848
2004-04-01	0.1604
2004-07-01	0.1093
2004-10-01	1.3003
2005-01-01	0.0956
2005-04-01	-0.9587
2005-07-01	0.6046
2005-10-01	0.2478
2006-01-01	0.3468
2006-04-01	-0.0125
2006-07-01	-0.1019
2006-10-01	1.8035
2007-01-01	1.1314
2007-04-01	1.7350
2007-07-01	-0.3611
2007-10-01	3.4151
2008-01-01	-2.5321
2008-04-01	1.0608
2008-07-01	-0.2078
2008-10-01	-0.0720
2009-01-01	-0.4867
2009-04-01	-0.6100
2009-07-01	0.6373
2009-10-01	-0.2504
2010-01-01	1.0597
2010-04-01	-1.0649
2010-07-01	5.2384
2010-10-01	1.5077
2011-01-01	2.4893
2011-04-01	4.0108
2011-07-01	0.9120
2011-10-01	-0.8399
2012-01-01	-0.0919
2012-04-01	8.7121
2012-07-01	3.2454
2012-10-01	3.6475
2013-01-01	0.0411
2013-04-01	9.9384
2013-07-01	-0.7676
2013-10-01	9.7844
2014-01-01	3.5080
2014-04-01	13.2939
2014-07-01	7.4039
2014-10-01	9.8282
2015-01-01	9.4815
2015-04-01	23.7621