Quarter	Billions of US Dollars
1975-04-01	0.1028
1976-10-01	0.0640
1979-01-01	0.1000
1980-04-01	0.3000
1980-10-01	0.2000
1983-07-01	0.0520
1984-01-01	0.1490
1985-10-01	0.0288
1986-07-01	0.0270
1987-01-01	0.0370
1987-07-01	0.0821
1987-10-01	0.0548
1989-07-01	0.0294
1990-07-01	0.0920
1991-07-01	0.5750
1992-07-01	0.0851
1993-01-01	0.3000
1993-07-01	0.1181
1993-10-01	0.0647
1994-01-01	0.1200
1994-04-01	0.2129
1995-04-01	0.5688
1995-07-01	0.1695
1995-10-01	0.2991
1996-01-01	0.7092
1996-04-01	0.6426
1996-07-01	0.7262
1996-10-01	0.1900
1997-01-01	0.9038
1997-04-01	0.8756
1997-07-01	0.2850
1997-10-01	0.0500
1998-01-01	0.5940
1998-04-01	2.3017
1998-07-01	0.2704
1998-10-01	0.0490
1999-01-01	0.0002
1999-04-01	0.0011
1999-07-01	0.0546
1999-10-01	0.1031
2000-01-01	0.0121
2000-04-01	0.0653
2000-07-01	0.6007
2000-10-01	0.0552
2001-01-01	1.6288
2001-04-01	0.7776
2001-07-01	0.0312
2001-10-01	1.5472
2002-01-01	0.8137
2002-04-01	0.3274
2002-07-01	0.0129
2002-10-01	0.0725
2003-01-01	3.0868
2003-04-01	1.5998
2003-07-01	2.1575
2003-10-01	5.2690
2004-01-01	0.8263
2004-04-01	0.1708
2004-07-01	0.1093
2004-10-01	1.6510
2005-01-01	0.3306
2005-04-01	0.3911
2005-07-01	0.6693
2005-10-01	0.3207
2006-01-01	0.4468
2006-04-01	0.1858
2006-07-01	0.5036
2006-10-01	1.9009
2007-01-01	1.5614
2007-04-01	2.0625
2007-07-01	0.1983
2007-10-01	3.4751
2008-04-01	1.0922
2008-07-01	0.2287
2008-10-01	0.0133
2009-01-01	0.1498
2009-04-01	0.4034
2009-07-01	0.7506
2009-10-01	0.1373
2010-01-01	1.2337
2010-04-01	0.1950
2010-07-01	5.3600
2010-10-01	3.1855
2011-01-01	3.9419
2011-04-01	4.4724
2011-07-01	0.9415
2011-10-01	0.7871
2012-01-01	2.7935
2012-04-01	8.6774
2012-07-01	3.3388
2012-10-01	4.0788
2013-01-01	4.3675
2013-04-01	10.3010
2013-07-01	1.4358
2013-10-01	10.4483
2014-01-01	6.8110
2014-04-01	16.6131
2014-07-01	6.7440
2014-10-01	11.5427
2015-01-01	10.7218
2015-04-01	23.0489