Quarter	Billions of US Dollars
1966-07-01	0.0150
1967-01-01	0.0138
1972-04-01	0.0325
1972-07-01	0.0213
1972-10-01	0.0548
1973-01-01	0.0366
1973-04-01	0.0506
1973-07-01	0.0358
1973-10-01	0.0600
1974-01-01	0.0518
1974-04-01	0.0486
1974-07-01	0.1671
1974-10-01	0.2958
1975-01-01	0.3976
1975-04-01	0.4933
1975-07-01	0.1394
1975-10-01	0.0377
1976-01-01	0.0749
1976-04-01	0.1044
1976-07-01	0.1446
1976-10-01	0.3270
1977-01-01	0.3424
1977-04-01	0.3253
1977-07-01	0.3808
1977-10-01	0.2800
1978-01-01	0.2671
1978-04-01	0.3596
1978-07-01	0.3417
1978-10-01	0.3124
1979-01-01	0.3059
1979-04-01	0.2653
1979-07-01	0.2886
1979-10-01	0.0769
1980-01-01	0.2299
1980-04-01	0.3686
1980-07-01	0.4889
1980-10-01	0.3071
1981-01-01	0.2966
1981-04-01	0.3520
1981-07-01	0.2001
1981-10-01	0.4128
1982-01-01	0.4653
1982-04-01	0.2595
1982-07-01	0.2019
1982-10-01	0.0694
1983-01-01	0.2880
1983-04-01	0.3623
1983-07-01	0.1951
1983-10-01	0.0436
1984-01-01	0.5547
1984-04-01	0.4093
1984-07-01	0.3537
1984-10-01	0.2274
1985-01-01	0.2384
1985-04-01	0.4088
1985-07-01	0.4139
1985-10-01	-0.1551
1986-01-01	0.7208
1986-04-01	0.9354
1986-07-01	0.5897
1986-10-01	0.2184
1987-01-01	1.0459
1987-04-01	0.5528
1987-07-01	-0.0274
1987-10-01	0.7700
1988-01-01	2.2143
1988-04-01	0.7574
1988-07-01	0.4615
1988-10-01	0.3785
1989-01-01	1.3781
1989-04-01	0.5036
1989-07-01	0.0007
1989-10-01	0.8682
1990-01-01	1.0805
1990-04-01	0.7798
1990-07-01	0.2120
1990-10-01	0.6029
1991-01-01	1.4150
1991-04-01	-0.2111
1991-07-01	0.5829
1991-10-01	0.9840
1992-01-01	0.9815
1992-04-01	1.2163
1992-07-01	0.5075
1992-10-01	0.1210
1993-01-01	0.9282
1993-04-01	1.2664
1993-07-01	1.1290
1993-10-01	1.2358
1994-01-01	2.0431
1994-04-01	0.4787
1994-07-01	0.0525
1994-10-01	2.3505
1995-01-01	4.0134
1995-04-01	0.4535
1995-07-01	0.2048
1995-10-01	1.3051
1996-01-01	3.4039
1996-04-01	1.8722
1996-07-01	0.6709
1996-10-01	0.1752
1997-01-01	2.4695
1997-04-01	1.0052
1997-07-01	1.9148
1997-10-01	-0.2630
1998-01-01	3.1776
1998-04-01	1.7293
1998-07-01	0.9945
1998-10-01	2.9978
1999-01-01	4.1107
1999-04-01	3.9678
1999-07-01	-0.9562
1999-10-01	0.8398
2000-01-01	4.4980
2000-04-01	3.6586
2000-07-01	3.6650
2000-10-01	0.0478
2001-01-01	6.4575
2001-04-01	1.5354
2001-07-01	1.9734
2001-10-01	7.6443
2002-01-01	9.6217
2002-04-01	4.0887
2002-07-01	0.4466
2002-10-01	1.3119
2003-01-01	3.6386
2003-04-01	11.0669
2003-07-01	5.0321
2003-10-01	2.7056
2004-01-01	10.9704
2004-04-01	4.4706
2004-07-01	2.6449
2004-10-01	1.6271
2005-01-01	13.9891
2005-04-01	12.1956
2005-07-01	-0.7488
2005-10-01	4.9527
2006-01-01	6.6582
2006-04-01	10.1563
2006-07-01	5.2651
2006-10-01	11.8617
2007-01-01	25.3629
2007-04-01	3.8692
2007-07-01	5.2098
2007-10-01	6.0147
2008-01-01	9.2426
2008-04-01	0.1483
2008-07-01	0.0293
2008-10-01	6.4894
2009-01-01	11.2879
2009-04-01	7.5900
2009-07-01	6.3966
2009-10-01	-4.3399
2010-01-01	0.4934
2010-04-01	-3.9333
2010-07-01	-2.0528
2010-10-01	-4.3668
2011-01-01	0.1615
2011-04-01	-3.9104
2011-07-01	0.8714
2011-10-01	-6.4702
2012-01-01	-10.2583
2012-04-01	-1.3678
2012-07-01	-1.1358
2012-10-01	-1.6577
2013-01-01	-5.4652
2013-04-01	8.4165
2013-07-01	-0.4658
2013-10-01	-3.0143
2014-01-01	-18.5159
2014-04-01	2.7419
2014-07-01	-4.8920
2014-10-01	3.1190
2015-01-01	-2.6812
2015-04-01	-2.2923