Quarter	Billions of US Dollars
1972-10-01	0.0450
1973-01-01	0.0150
1981-07-01	0.0300
1982-07-01	0.0500
1983-01-01	0.0208
1983-07-01	0.0212
1984-01-01	0.1500
1984-07-01	0.0266
1984-10-01	0.0242
1985-01-01	0.2973
1985-04-01	0.1623
1985-07-01	0.2828
1986-04-01	0.0831
1987-01-01	0.1140
1987-04-01	0.1696
1987-07-01	0.0829
1987-10-01	0.1805
1988-04-01	0.1198
1988-07-01	0.1496
1989-01-01	0.4865
1989-04-01	0.1527
1989-10-01	0.4389
1990-01-01	0.1111
1990-04-01	0.5719
1990-10-01	0.2273
1991-01-01	1.3993
1991-04-01	0.8454
1991-10-01	0.4231
1992-01-01	0.7905
1992-04-01	0.6587
1992-07-01	0.5065
1992-10-01	0.8065
1993-01-01	1.7079
1993-04-01	0.1527
1993-07-01	0.5562
1993-10-01	1.5745
1994-04-01	0.6002
1994-07-01	1.3724
1994-10-01	1.9180
1995-01-01	0.3535
1995-04-01	1.2919
1995-10-01	1.1445
1996-01-01	2.3426
1996-04-01	0.4894
1996-07-01	1.6225
1996-10-01	0.6535
1997-01-01	0.1200
1997-04-01	0.2000
1997-07-01	1.5617
1997-10-01	2.9141
1998-01-01	4.2057
1998-04-01	1.3993
1998-07-01	1.3865
1998-10-01	0.7895
1999-01-01	2.5008
1999-04-01	1.5365
1999-07-01	0.7749
1999-10-01	0.2472
2000-01-01	4.2419
2000-04-01	0.6453
2000-07-01	1.8519
2000-10-01	0.3884
2001-01-01	0.1458
2001-04-01	1.2019
2001-07-01	2.3775
2001-10-01	0.1744
2002-01-01	5.0104
2002-04-01	1.0099
2002-07-01	0.3378
2002-10-01	0.7562
2003-01-01	11.9624
2003-04-01	2.6515
2003-07-01	2.1175
2003-10-01	2.5658
2004-01-01	2.9795
2004-04-01	6.1511
2004-07-01	3.4649
2004-10-01	4.8233
2005-01-01	7.2867
2005-04-01	6.4416
2005-07-01	3.8639
2005-10-01	3.6964
2006-01-01	10.3303
2006-04-01	9.8502
2006-07-01	4.7995
2006-10-01	11.2986
2007-01-01	20.3837
2007-04-01	7.7709
2007-07-01	5.1335
2007-10-01	3.7931
2008-01-01	9.7605
2008-04-01	9.1982
2008-07-01	4.4815
2008-10-01	13.8120
2009-01-01	34.4252
2009-04-01	32.0070
2009-07-01	9.1903
2009-10-01	4.9000
2010-01-01	14.5295
2010-04-01	43.5703
2010-07-01	7.1625
2010-10-01	27.8513
2011-01-01	6.5716
2011-04-01	16.9351
2011-07-01	6.1825
2011-10-01	0.0071
2012-01-01	0.5493
2012-04-01	4.0861
2012-07-01	0.8000
2012-10-01	1.1115
2013-01-01	1.8438
2013-04-01	22.6864
2013-07-01	1.5551
2013-10-01	11.6923
2014-01-01	7.2185
2014-04-01	15.8192
2014-07-01	5.7043
2014-10-01	1.0600
2015-01-01	0.1894
2015-04-01	0.2400