Quarter	Billions of US Dollars
1972-07-01	0.0313
1972-10-01	0.0600
1973-04-01	0.0250
1973-10-01	0.0360
1974-10-01	0.0250
1975-01-01	0.0350
1976-04-01	0.0500
1976-07-01	0.0401
1976-10-01	0.1913
1977-01-01	0.0834
1977-04-01	0.1986
1977-07-01	0.2397
1977-10-01	0.4635
1978-01-01	0.2416
1978-04-01	0.1775
1978-07-01	0.2459
1978-10-01	0.1767
1979-01-01	0.2035
1979-04-01	0.0500
1979-07-01	0.2433
1979-10-01	0.2023
1980-04-01	0.2600
1980-07-01	0.0551
1981-04-01	0.0464
1981-07-01	0.0601
1982-01-01	0.0420
1982-10-01	0.0181
1985-01-01	0.1604
1985-07-01	0.0750
1986-01-01	0.2702
1986-07-01	0.0364
1989-07-01	1.0000
1991-07-01	1.0158
1991-10-01	0.4900
1992-01-01	0.9950
1992-04-01	1.7050
1992-07-01	0.3650
1992-10-01	0.1600
1993-01-01	0.8600
1993-04-01	1.1250
1993-07-01	1.4450
1993-10-01	1.8788
1994-01-01	0.9439
1994-04-01	42.9562
1994-07-01	0.4350
1994-10-01	1.8354
1995-01-01	0.3060
1995-04-01	2.5373
1995-07-01	0.7007
1995-10-01	1.5124
1996-01-01	2.0791
1996-04-01	4.2799
1996-07-01	1.8290
1996-10-01	4.1071
1997-01-01	1.9514
1997-04-01	7.3485
1997-07-01	4.1341
1997-10-01	1.7599
1998-01-01	4.5001
1998-04-01	2.2910
1998-07-01	1.7069
1998-10-01	0.0119
1999-01-01	0.2449
1999-04-01	3.0221
1999-07-01	1.9788
1999-10-01	4.9321
2000-01-01	5.4298
2000-04-01	2.1521
2000-07-01	9.1188
2000-10-01	1.0902
2001-01-01	4.3124
2001-04-01	5.0842
2001-07-01	3.1544
2001-10-01	2.0611
2002-01-01	6.0106
2002-04-01	3.3733
2002-07-01	3.0960
2002-10-01	1.1638
2003-01-01	1.1965
2003-04-01	6.3546
2003-07-01	6.2106
2003-10-01	5.6431
2004-01-01	3.9762
2004-04-01	2.1307
2004-07-01	4.6044
2004-10-01	2.3618
2005-01-01	4.0010
2005-04-01	4.2367
2005-07-01	10.5475
2005-10-01	4.7808
2006-01-01	6.6998
2006-04-01	1.8917
2006-07-01	5.8086
2006-10-01	7.7318
2007-01-01	5.0990
2007-04-01	7.1281
2007-07-01	2.4599
2007-10-01	3.4313
2008-01-01	4.0730
2008-04-01	5.5725
2008-07-01	1.6546
2008-10-01	0.1065
2009-01-01	3.0598
2009-04-01	4.7558
2009-07-01	9.5674
2009-10-01	12.8047
2010-01-01	12.2469
2010-04-01	9.7987
2010-07-01	19.6159
2010-10-01	6.7751
2011-01-01	16.0431
2011-04-01	15.0081
2011-07-01	4.3436
2011-10-01	9.5856
2012-01-01	26.4138
2012-04-01	6.9752
2012-07-01	14.0241
2012-10-01	11.4799
2013-01-01	9.2751
2013-04-01	19.7155
2013-07-01	8.7176
2013-10-01	7.5098
2014-01-01	20.4001
2014-04-01	17.4415
2014-07-01	16.4580
2014-10-01	2.8472
2015-01-01	0.5627
2015-04-01	7.0147