Quarter	Billions of US Dollars
1974-10-01	0.0189
1976-04-01	0.0100
1976-07-01	0.0241
1976-10-01	0.0401
1977-01-01	0.0250
1977-10-01	0.0465
1978-01-01	0.0415
1978-04-01	0.0145
1979-01-01	0.0436
1979-07-01	-0.0254
1980-10-01	0.0473
1981-07-01	0.1031
1981-10-01	-0.0413
1982-01-01	0.0156
1983-04-01	0.0063
1983-07-01	0.0702
1983-10-01	0.0716
1984-01-01	0.0435
1984-04-01	0.1148
1984-07-01	0.1899
1984-10-01	0.3622
1985-01-01	0.1000
1985-04-01	0.4766
1985-07-01	0.3426
1985-10-01	0.4441
1986-01-01	0.4087
1986-04-01	0.2043
1986-07-01	0.0200
1986-10-01	0.1250
1987-01-01	-0.0245
1987-04-01	0.0258
1987-07-01	0.2050
1987-10-01	0.0500
1988-01-01	-0.4276
1988-04-01	-0.0950
1988-07-01	0.0500
1988-10-01	0.0600
1989-01-01	-0.1095
1989-04-01	-0.0950
1989-07-01	-0.0361
1989-10-01	0.1256
1990-01-01	0.2480
1990-04-01	-0.2235
1990-07-01	0.0580
1990-10-01	-0.1330
1991-01-01	0.6562
1991-04-01	1.2873
1991-07-01	0.2500
1991-10-01	0.5121
1992-01-01	0.7308
1992-04-01	0.2435
1992-07-01	0.9615
1992-10-01	0.8008
1993-01-01	0.5692
1993-04-01	0.7168
1993-07-01	0.5621
1993-10-01	2.4473
1994-01-01	0.7099
1994-04-01	1.3547
1994-07-01	1.3421
1994-10-01	0.3517
1995-01-01	1.5412
1995-04-01	2.1507
1995-07-01	1.5004
1995-10-01	1.0390
1996-01-01	2.4099
1996-04-01	3.4264
1996-07-01	3.8751
1996-10-01	3.9999
1997-01-01	2.9411
1997-04-01	2.9014
1997-07-01	4.9436
1997-10-01	1.9080
1998-01-01	-0.7619
1998-04-01	3.2828
1998-07-01	-1.0555
1998-10-01	-1.1193
1999-01-01	-0.7916
1999-04-01	-1.1220
1999-07-01	-1.6322
1999-10-01	0.2060
2000-01-01	1.5289
2000-04-01	-0.4954
2000-07-01	-1.0859
2000-10-01	0.1564
2001-01-01	-0.8417
2001-04-01	-0.2198
2001-07-01	-1.5560
2001-10-01	1.9203
2002-01-01	-1.4717
2002-04-01	1.1035
2002-07-01	1.1601
2002-10-01	0.7382
2003-01-01	0.8281
2003-04-01	2.8260
2003-07-01	2.4199
2003-10-01	-0.2865
2004-01-01	3.7579
2004-04-01	3.4864
2004-07-01	1.5547
2004-10-01	2.0219
2005-01-01	2.4024
2005-04-01	1.0857
2005-07-01	2.4767
2005-10-01	3.8787
2006-01-01	1.6291
2006-04-01	3.8086
2006-07-01	3.6962
2006-10-01	3.3340
2007-01-01	0.1787
2007-04-01	9.7772
2007-07-01	-0.0434
2007-10-01	1.3402
2008-01-01	0.6054
2008-04-01	1.9668
2008-07-01	-1.7205
2008-10-01	-1.5442
2009-01-01	2.9579
2009-04-01	8.7459
2009-07-01	5.4556
2009-10-01	-1.5774
2010-01-01	1.5408
2010-04-01	0.9595
2010-07-01	4.4950
2010-10-01	3.4659
2011-01-01	5.4994
2011-04-01	3.1035
2011-07-01	4.2630
2011-10-01	3.1115
2012-01-01	6.0882
2012-04-01	0.7750
2012-07-01	8.0997
2012-10-01	-2.1320
2013-01-01	3.7581
2013-04-01	-5.4007
2013-07-01	11.1311
2013-10-01	8.9640
2014-01-01	2.7263
2014-04-01	-0.3505
2014-07-01	-0.0488
2014-10-01	5.6618
2015-01-01	-1.7926
2015-04-01	2.7353