Quarter	Billions of US Dollars
1980-07-01	0.0250
1982-01-01	0.0429
1982-04-01	0.0205
1983-04-01	0.0400
1983-07-01	0.0202
1984-10-01	0.0830
1985-01-01	0.1157
1985-04-01	0.1289
1985-07-01	0.3765
1985-10-01	0.1491
1986-01-01	0.4641
1986-04-01	0.4775
1986-07-01	0.1738
1986-10-01	0.1114
1987-01-01	0.1915
1987-04-01	0.2500
1987-07-01	0.3663
1987-10-01	0.2768
1988-01-01	0.2751
1988-04-01	0.0256
1988-07-01	0.2134
1988-10-01	0.1936
1989-01-01	0.1538
1989-07-01	0.1000
1991-04-01	0.1429
1991-10-01	0.1145
1992-01-01	0.2274
1992-04-01	0.0700
1992-07-01	0.3890
1992-10-01	0.5500
1993-01-01	0.4042
1993-04-01	0.6626
1993-07-01	1.2785
1993-10-01	0.7930
1994-01-01	1.5647
1994-04-01	0.7483
1994-07-01	0.8922
1994-10-01	0.6685
1995-01-01	0.1705
1995-07-01	0.7592
1995-10-01	0.6691
1996-01-01	0.8060
1996-04-01	0.8785
1996-07-01	1.5131
1996-10-01	0.8275
1997-01-01	0.7990
1997-04-01	3.2954
1997-07-01	0.6772
1997-10-01	0.5000
1998-01-01	0.6000
1998-04-01	0.2530
1998-10-01	1.0000
1999-04-01	0.7250
1999-07-01	0.3748
1999-10-01	0.9300
2000-01-01	0.0850
2000-04-01	0.5107
2000-07-01	0.0800
2000-10-01	0.8476
2001-01-01	0.1297
2001-04-01	2.2960
2001-07-01	0.0805
2001-10-01	0.6228
2002-01-01	1.5769
2002-04-01	0.9477
2002-10-01	0.1453
2003-01-01	0.4958
2003-04-01	0.8039
2003-07-01	1.0481
2003-10-01	2.9102
2004-01-01	0.3595
2004-04-01	0.7646
2004-07-01	3.2207
2004-10-01	4.7123
2005-01-01	1.8953
2005-04-01	0.6200
2005-07-01	3.5058
2005-10-01	2.0898
2006-01-01	0.5589
2006-04-01	1.5191
2006-07-01	0.8425
2006-10-01	2.0788
2007-01-01	2.5880
2007-04-01	7.4868
2007-07-01	2.3751
2007-10-01	1.4116
2008-01-01	1.3464
2008-04-01	2.5105
2008-07-01	2.9092
2008-10-01	1.5646
2009-01-01	0.6617
2009-04-01	1.7669
2009-07-01	3.0451
2009-10-01	2.0866
2010-01-01	4.1068
2010-04-01	4.6002
2010-07-01	9.8897
2010-10-01	10.3494
2011-01-01	12.5281
2011-04-01	20.2899
2011-07-01	8.3901
2011-10-01	6.6078
2012-01-01	8.5262
2012-04-01	21.4635
2012-07-01	7.4402
2012-10-01	16.3157
2013-01-01	18.4729
2013-04-01	27.8517
2013-07-01	12.6814
2013-10-01	30.3554
2014-01-01	24.7374
2014-04-01	54.5042
2014-07-01	35.3089
2014-10-01	54.9664
2015-01-01	27.6672
2015-04-01	49.9284