Quarter	Billions of US Dollars
1966-04-01	0.0100
1967-04-01	0.0250
1971-01-01	0.0256
1971-10-01	0.0124
1972-01-01	0.0576
1972-04-01	0.0443
1972-07-01	0.1007
1972-10-01	0.1282
1973-01-01	0.0427
1973-04-01	0.0432
1973-07-01	0.0428
1973-10-01	0.0425
1974-01-01	0.0162
1974-04-01	0.0028
1974-10-01	0.0515
1975-01-01	0.0216
1975-04-01	0.0777
1975-07-01	0.0841
1975-10-01	0.1264
1976-01-01	0.1262
1976-04-01	0.1170
1976-07-01	0.2991
1976-10-01	0.2448
1977-01-01	0.2880
1977-04-01	0.1745
1977-07-01	0.1288
1977-10-01	0.2344
1978-01-01	0.2332
1978-04-01	0.2189
1978-07-01	0.3244
1978-10-01	0.1373
1979-01-01	0.1808
1979-04-01	0.1533
1979-07-01	0.2115
1979-10-01	0.0486
1980-01-01	0.2007
1980-04-01	0.3773
1980-07-01	0.3599
1980-10-01	0.1060
1981-01-01	0.2085
1981-04-01	0.2070
1981-07-01	0.3301
1981-10-01	0.1891
1982-01-01	0.2374
1982-04-01	0.2445
1982-07-01	-0.0963
1982-10-01	0.2488
1983-01-01	0.1203
1983-04-01	0.2746
1983-07-01	0.2300
1983-10-01	0.8209
1984-01-01	1.1132
1984-04-01	0.4171
1984-07-01	1.1214
1984-10-01	0.8137
1985-01-01	0.2703
1985-04-01	0.9833
1985-07-01	-0.5334
1985-10-01	0.1472
1986-01-01	0.0259
1986-04-01	0.9753
1986-07-01	3.2073
1986-10-01	1.7595
1987-01-01	2.8584
1987-04-01	0.3064
1987-07-01	0.1205
1987-10-01	0.2655
1988-01-01	0.2573
1988-04-01	1.0626
1988-07-01	-0.0775
1988-10-01	-0.4381
1989-01-01	0.2082
1989-04-01	0.5120
1989-07-01	0.3606
1989-10-01	0.8085
1990-01-01	1.9409
1990-04-01	-0.5320
1990-07-01	0.8568
1990-10-01	-0.1977
1991-01-01	-1.1998
1991-04-01	-0.4260
1991-07-01	-1.0145
1991-10-01	-2.0659
1992-01-01	-2.7261
1992-04-01	-0.5832
1992-07-01	-0.1013
1992-10-01	-0.1193
1993-01-01	1.2318
1993-04-01	0.5781
1993-07-01	4.4180
1993-10-01	1.3416
1994-01-01	-0.1570
1994-04-01	-1.3792
1994-07-01	-0.0132
1994-10-01	-0.2257
1995-01-01	-2.1572
1995-04-01	-0.0333
1995-07-01	0.9286
1995-10-01	-0.4561
1996-01-01	0.3025
1996-04-01	0.3990
1996-07-01	-0.0577
1996-10-01	0.1809
1997-01-01	0.6776
1997-04-01	1.6404
1997-07-01	-0.2191
1997-10-01	-0.6297
1998-01-01	-1.0244
1998-04-01	0.3063
1998-07-01	-1.2520
1998-10-01	0.3609
1999-01-01	0.2727
1999-04-01	0.1765
1999-07-01	1.4491
1999-10-01	-0.4377
2000-01-01	0.8737
2000-04-01	0.4234
2000-07-01	0.2193
2000-10-01	0.4290
2001-01-01	0.7837
2001-04-01	2.3808
2001-07-01	-0.5040
2001-10-01	0.0350
2002-01-01	0.0564
2002-04-01	0.1016
2002-07-01	0.3071
2002-10-01	-0.4969
2003-01-01	2.1460
2003-04-01	3.0674
2003-07-01	1.3519
2003-10-01	-0.4216
2004-01-01	0.8597
2004-04-01	2.1283
2004-07-01	0.4316
2004-10-01	1.0067
2005-01-01	8.1362
2005-04-01	6.0268
2005-07-01	1.3541
2005-10-01	4.5446
2006-01-01	2.8473
2006-04-01	3.5128
2006-07-01	1.1159
2006-10-01	3.8754
2007-01-01	5.7406
2007-04-01	5.6630
2007-07-01	-2.0876
2007-10-01	1.1080
2008-01-01	-2.0401
2008-04-01	6.3765
2008-07-01	5.0777
2008-10-01	-3.7175
2009-01-01	13.1794
2009-04-01	12.8019
2009-07-01	5.3656
2009-10-01	4.5743
2010-01-01	0.6151
2010-04-01	3.9301
2010-07-01	-9.6836
2010-10-01	-0.7518
2011-01-01	13.6418
2011-04-01	0.2015
2011-07-01	3.7233
2011-10-01	-9.0188
2012-01-01	2.8388
2012-04-01	-7.2102
2012-07-01	4.1905
2012-10-01	3.1936
2013-01-01	-4.1492
2013-04-01	-4.2055
2013-07-01	-0.9866
2013-10-01	1.7032
2014-01-01	-2.7040
2014-04-01	-2.8041
2014-07-01	0.7866
2014-10-01	1.5064
2015-01-01	6.0438
2015-04-01	-2.6869