Quarter	Billions of US Dollars
1971-10-01	0.0150
1973-07-01	0.0766
1974-01-01	0.0500
1975-01-01	0.0244
1977-04-01	0.1069
1977-07-01	0.0214
1981-10-01	0.0550
1982-07-01	0.0232
1982-10-01	0.0400
1983-10-01	0.0500
1984-10-01	0.0750
1985-01-01	0.0513
1985-07-01	0.0400
1986-07-01	0.1444
1986-10-01	0.0850
1987-04-01	0.2140
1988-01-01	0.1556
1988-04-01	0.0811
1989-01-01	0.1284
1990-04-01	0.1167
1991-01-01	0.2250
1991-04-01	0.2911
1992-04-01	0.0885
1992-07-01	0.0221
1993-01-01	0.1572
1993-04-01	0.3500
1993-07-01	0.7500
1993-10-01	3.5607
1994-01-01	1.1501
1994-04-01	0.8989
1994-07-01	1.1476
1994-10-01	1.8422
1995-01-01	0.3030
1995-04-01	0.2396
1995-07-01	0.0646
1995-10-01	0.9556
1996-01-01	2.7492
1996-04-01	1.1618
1996-07-01	0.9639
1996-10-01	1.5325
1997-01-01	2.5709
1997-04-01	1.8829
1997-07-01	3.8450
1997-10-01	0.2290
1998-01-01	0.4000
1998-04-01	0.1292
1998-07-01	0.1130
1998-10-01	0.4061
1999-01-01	3.3205
1999-04-01	1.3380
1999-07-01	1.3920
1999-10-01	0.8907
2000-01-01	1.7584
2000-04-01	0.5783
2000-07-01	4.5269
2000-10-01	1.4884
2001-01-01	6.4174
2001-04-01	4.3677
2001-07-01	0.5831
2001-10-01	3.3989
2002-01-01	3.5496
2002-04-01	1.9792
2002-07-01	0.6164
2002-10-01	0.3263
2003-01-01	4.8058
2003-04-01	2.0011
2003-07-01	3.0013
2003-10-01	5.6751
2004-01-01	2.8320
2004-04-01	1.6344
2004-07-01	3.4757
2004-10-01	3.9524
2005-01-01	4.4549
2005-04-01	3.4119
2005-07-01	2.9791
2005-10-01	2.8516
2006-01-01	1.9756
2006-04-01	2.2700
2006-07-01	1.9762
2006-10-01	3.9518
2007-01-01	2.2714
2007-04-01	4.5207
2007-07-01	0.8345
2007-10-01	2.0380
2008-01-01	0.7930
2008-04-01	3.1116
2008-07-01	2.1905
2008-10-01	0.3788
2009-01-01	1.1922
2009-04-01	5.0883
2009-07-01	6.5708
2009-10-01	5.2937
2010-01-01	2.8370
2010-04-01	1.1746
2010-07-01	4.9523
2010-10-01	5.9328
2011-01-01	2.3603
2011-04-01	3.6769
2011-07-01	2.4735
2011-10-01	4.0080
2012-01-01	15.9618
2012-04-01	10.3900
2012-07-01	3.8434
2012-10-01	5.4500
2013-01-01	7.1479
2013-04-01	7.5081
2013-07-01	0.8753
2013-10-01	2.1146
2014-01-01	7.1201
2014-04-01	5.8792
2014-07-01	5.1058
2014-10-01	8.5999
2015-01-01	4.4786
2015-04-01	3.8693