Quarter	Billions of US Dollars
1969-01-01	0.0271
1969-04-01	0.0150
1969-10-01	0.0500
1970-07-01	0.0750
1971-01-01	0.0750
1971-04-01	0.0023
1971-07-01	0.0551
1971-10-01	0.0862
1972-01-01	0.1547
1972-04-01	0.5964
1972-07-01	0.2027
1972-10-01	0.4987
1973-01-01	0.1054
1973-04-01	0.3452
1973-07-01	0.2167
1973-10-01	0.5332
1974-01-01	0.4564
1974-04-01	0.5950
1974-07-01	0.4387
1974-10-01	0.5826
1975-01-01	0.7297
1975-04-01	0.8977
1975-07-01	1.0416
1975-10-01	2.2880
1976-01-01	3.2751
1976-04-01	1.6192
1976-07-01	1.7880
1976-10-01	2.1889
1977-01-01	1.1877
1977-04-01	1.2950
1977-07-01	1.5575
1977-10-01	1.0336
1978-01-01	1.4276
1978-04-01	1.7277
1978-07-01	0.7518
1978-10-01	0.9101
1979-01-01	1.7899
1979-04-01	0.7150
1979-07-01	0.7077
1979-10-01	0.4017
1980-01-01	0.6383
1980-04-01	1.3064
1980-07-01	-0.2848
1980-10-01	0.7292
1981-01-01	0.8165
1981-04-01	2.2707
1981-07-01	2.3728
1981-10-01	3.6136
1982-01-01	3.3084
1982-04-01	2.1529
1982-07-01	2.9155
1982-10-01	1.2090
1983-01-01	1.1122
1983-04-01	2.0569
1983-07-01	0.2511
1983-10-01	1.1261
1984-01-01	1.4795
1984-04-01	1.2085
1984-07-01	1.2289
1984-10-01	1.1059
1985-01-01	1.2767
1985-04-01	1.2877
1985-07-01	1.8708
1985-10-01	0.6185
1986-01-01	3.6703
1986-04-01	3.2717
1986-07-01	3.4591
1986-10-01	2.6163
1987-01-01	0.5156
1987-04-01	1.0724
1987-07-01	0.2615
1987-10-01	1.2381
1988-01-01	-0.4949
1988-04-01	1.7033
1988-07-01	2.2937
1988-10-01	1.9371
1989-01-01	3.2098
1989-04-01	0.2984
1989-07-01	0.0731
1989-10-01	0.8251
1990-01-01	1.8346
1990-04-01	1.3765
1990-07-01	-0.6137
1990-10-01	1.8773
1991-01-01	4.5170
1991-04-01	4.4836
1991-07-01	1.3087
1991-10-01	4.2045
1992-01-01	1.3791
1992-04-01	4.0407
1992-07-01	2.3970
1992-10-01	2.2865
1993-01-01	10.2680
1993-04-01	3.1914
1993-07-01	4.7439
1993-10-01	-0.4221
1994-01-01	7.5352
1994-04-01	2.8996
1994-07-01	6.2863
1994-10-01	-0.5647
1995-01-01	1.8684
1995-04-01	1.7241
1995-07-01	6.2246
1995-10-01	-0.8730
1996-01-01	1.0136
1996-04-01	0.5458
1996-07-01	2.8064
1996-10-01	3.3694
1997-01-01	3.4918
1997-04-01	3.4153
1997-07-01	3.3997
1997-10-01	-2.6786
1998-01-01	5.1235
1998-04-01	5.8211
1998-07-01	2.8815
1998-10-01	3.1236
1999-01-01	0.7505
1999-04-01	5.1906
1999-07-01	2.2809
1999-10-01	1.9933
2000-01-01	0.2978
2000-04-01	-3.4021
2000-07-01	-0.0410
2000-10-01	-1.0989
2001-01-01	4.4255
2001-04-01	4.6818
2001-07-01	3.5670
2001-10-01	7.1355
2002-01-01	6.6885
2002-04-01	3.2439
2002-07-01	5.6075
2002-10-01	1.5383
2003-01-01	-0.9500
2003-04-01	9.8276
2003-07-01	5.0507
2003-10-01	10.5826
2004-01-01	-0.0389
2004-04-01	-2.1054
2004-07-01	9.5877
2004-10-01	6.0221
2005-01-01	1.9150
2005-04-01	6.1315
2005-07-01	-1.8623
2005-10-01	8.7120
2006-01-01	5.2442
2006-04-01	-2.6961
2006-07-01	9.3681
2006-10-01	13.8254
2007-01-01	10.5264
2007-04-01	15.2333
2007-07-01	3.2465
2007-10-01	18.0318
2008-01-01	5.2214
2008-04-01	49.6821
2008-07-01	13.2231
2008-10-01	-10.7767
2009-01-01	12.8717
2009-04-01	24.0515
2009-07-01	4.0260
2009-10-01	25.2435
2010-01-01	8.3229
2010-04-01	28.6782
2010-07-01	18.6939
2010-10-01	23.4835
2011-01-01	12.0463
2011-04-01	20.5449
2011-07-01	-0.0250
2011-10-01	17.0724
2012-01-01	26.5287
2012-04-01	-8.8214
2012-07-01	14.9336
2012-10-01	3.9074
2013-01-01	4.0079
2013-04-01	-7.6443
2013-07-01	42.0532
2013-10-01	26.9686
2014-01-01	7.0919
2014-04-01	10.9957
2014-07-01	15.4775
2014-10-01	5.0497
2015-01-01	24.9575
2015-04-01	-7.7810