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
1997-07-01	1.5617
1997-10-01	2.9141
1998-01-01	4.0307
1998-04-01	1.0493
1998-07-01	1.3865
1998-10-01	0.7895
1999-01-01	2.5008
1999-04-01	0.6136
1999-07-01	0.5608
1999-10-01	0.2472
2000-01-01	2.7596
2000-04-01	0.3002
2000-07-01	1.0497
2000-10-01	0.3884
2001-01-01	0.1458
2001-04-01	0.1293
2001-07-01	2.3775
2001-10-01	0.1744
2002-01-01	4.8571
2002-04-01	0.0043
2002-07-01	0.2099
2002-10-01	0.2717
2003-01-01	11.8551
2003-04-01	0.9496
2003-07-01	0.0222
2003-10-01	0.2446
2004-01-01	1.1787
2004-04-01	2.6773
2004-07-01	0.6194
2004-10-01	1.9615
2005-01-01	1.2500
2005-04-01	2.2470
2005-07-01	0.8499
2005-10-01	0.1654
2006-01-01	6.0685
2006-04-01	5.1278
2006-10-01	5.7943
2007-01-01	9.0556
2007-04-01	0.2019
2007-07-01	1.9973
2008-01-01	2.8645
2008-04-01	3.4011
2008-10-01	3.9561
2009-01-01	18.4299
2009-04-01	22.3966
2009-07-01	0.8071
2009-10-01	3.2765
2010-01-01	10.3198
2010-04-01	42.4899
2010-07-01	6.4557
2010-10-01	27.7152
2011-01-01	6.4906
2011-04-01	14.1087
2011-07-01	5.1763
2012-01-01	0.4728
2012-04-01	3.5897
2012-10-01	0.2615
2013-04-01	21.6543
2013-07-01	1.0599
2013-10-01	11.5790
2014-01-01	5.4102
2014-04-01	9.6155
2014-07-01	4.4938
2014-10-01	0.9368
2015-04-01	0.0850