Quarter	Billions of US Dollars
1973-07-01	0.0266
1973-10-01	0.0063
1975-01-01	0.0244
1977-04-01	0.0428
1977-07-01	0.0214
1978-07-01	-0.0477
1978-10-01	-0.0123
1981-01-01	0.0200
1981-07-01	0.0600
1981-10-01	0.0300
1982-07-01	0.0732
1982-10-01	0.0805
1983-01-01	0.1000
1983-04-01	0.3000
1983-07-01	0.1172
1983-10-01	0.3500
1984-01-01	0.3855
1984-04-01	0.7000
1984-07-01	0.1372
1984-10-01	0.2750
1985-01-01	0.5059
1985-04-01	0.4788
1985-07-01	0.9362
1985-10-01	0.5882
1986-01-01	0.1223
1986-04-01	0.3829
1986-07-01	0.4642
1986-10-01	0.2924
1987-01-01	0.2087
1987-04-01	0.0654
1987-07-01	-0.1794
1987-10-01	0.0015
1988-01-01	0.1571
1988-04-01	-0.0424
1988-07-01	0.1271
1988-10-01	0.0199
1989-01-01	0.5769
1989-04-01	0.1215
1989-07-01	-0.0071
1989-10-01	-0.1975
1990-01-01	0.2570
1990-04-01	-0.4530
1990-07-01	0.5450
1990-10-01	-0.2336
1991-01-01	0.5899
1991-04-01	-0.1004
1991-07-01	0.0078
1991-10-01	-0.1350
1992-01-01	-0.8935
1992-04-01	-0.2525
1992-07-01	-0.2289
1992-10-01	-0.0878
1993-01-01	-0.0596
1993-04-01	-0.1199
1993-07-01	-0.1431
1993-10-01	1.6430
1994-01-01	0.9182
1994-04-01	0.5663
1994-07-01	1.1117
1994-10-01	2.4915
1995-01-01	-0.2530
1995-04-01	0.4333
1995-07-01	-0.0314
1995-10-01	1.9107
1996-01-01	-1.1609
1996-04-01	-1.2923
1996-07-01	1.2404
1996-10-01	1.4015
1997-01-01	0.9947
1997-04-01	1.9607
1997-07-01	0.8872
1997-10-01	-0.3978
1998-01-01	-0.2706
1998-04-01	0.1949
1998-07-01	0.0076
1998-10-01	-0.3122
1999-01-01	0.8514
1999-04-01	0.9984
1999-07-01	0.6969
1999-10-01	0.7017
2000-01-01	0.5880
2000-04-01	-0.8691
2000-07-01	0.5176
2000-10-01	1.6687
2001-01-01	-0.2351
2001-04-01	2.4262
2001-07-01	-0.2363
2001-10-01	-0.8458
2002-01-01	3.5061
2002-04-01	2.4745
2002-07-01	1.0507
2002-10-01	1.0732
2003-01-01	0.9652
2003-04-01	2.1885
2003-07-01	0.4109
2003-10-01	0.0332
2004-01-01	1.0661
2004-04-01	0.6411
2004-07-01	1.4133
2004-10-01	0.6161
2005-01-01	1.4207
2005-04-01	0.0389
2005-07-01	0.2848
2005-10-01	-4.0477
2006-01-01	0.0326
2006-04-01	0.9375
2006-07-01	-0.7553
2006-10-01	1.3662
2007-01-01	-0.2969
2007-04-01	2.0213
2007-07-01	0.2468
2007-10-01	-0.4437
2008-01-01	-0.3587
2008-04-01	-0.0773
2008-07-01	1.5496
2008-10-01	0.6831
2009-01-01	-3.0910
2009-04-01	1.6383
2009-07-01	0.9977
2009-10-01	0.4034
2010-01-01	1.6917
2010-04-01	2.2287
2010-07-01	3.3600
2010-10-01	4.5218
2011-01-01	-0.2220
2011-04-01	11.3344
2011-07-01	3.5342
2011-10-01	3.9803
2012-01-01	8.2565
2012-04-01	4.5944
2012-07-01	5.1972
2012-10-01	4.8239
2013-01-01	5.3994
2013-04-01	9.6654
2013-07-01	2.1455
2013-10-01	3.8214
2014-01-01	6.6908
2014-04-01	9.0868
2014-07-01	10.5205
2014-10-01	2.1586
2015-01-01	4.4965
2015-04-01	9.1075