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	0.0954
1975-10-01	0.1264
1976-01-01	0.1578
1976-04-01	0.0854
1976-07-01	0.2991
1976-10-01	0.2364
1977-01-01	0.2371
1977-04-01	0.1745
1977-07-01	0.0883
1977-10-01	0.2344
1978-01-01	0.2591
1978-04-01	0.2189
1978-07-01	0.3244
1978-10-01	0.1586
1979-01-01	0.1808
1979-04-01	0.1533
1979-07-01	0.2115
1979-10-01	0.0874
1980-01-01	0.2007
1980-04-01	0.3773
1980-07-01	0.3599
1980-10-01	0.1526
1981-01-01	0.2000
1981-04-01	0.2363
1981-07-01	0.3269
1981-10-01	0.2343
1982-01-01	0.3257
1982-04-01	0.3113
1982-07-01	0.0746
1982-10-01	0.3769
1983-01-01	0.2856
1983-04-01	0.4816
1983-07-01	0.6877
1983-10-01	0.4662
1984-01-01	1.2710
1984-04-01	0.3150
1984-07-01	1.3647
1984-10-01	0.7357
1985-01-01	0.7972
1985-04-01	0.7607
1985-07-01	0.4342
1985-10-01	0.6497
1986-01-01	1.0004
1986-04-01	1.1349
1986-07-01	3.0829
1986-10-01	3.6979
1987-01-01	2.6350
1987-04-01	0.3372
1987-07-01	0.3360
1987-10-01	0.5757
1988-01-01	0.9321
1988-04-01	0.8073
1988-07-01	1.0532
1988-10-01	0.8271
1989-01-01	0.5843
1989-04-01	1.0318
1989-07-01	0.6387
1989-10-01	1.6941
1990-01-01	1.7621
1990-04-01	1.0228
1990-07-01	0.8491
1990-10-01	0.0921
1991-01-01	0.2569
1991-04-01	0.2775
1991-07-01	0.3068
1991-10-01	0.0184
1992-01-01	0.5129
1992-04-01	0.6379
1992-07-01	0.5476
1992-10-01	0.3691
1993-01-01	2.6622
1993-04-01	1.7355
1993-07-01	5.5348
1993-10-01	2.0286
1994-01-01	0.6419
1994-04-01	0.8525
1994-07-01	0.9251
1994-10-01	0.4718
1995-01-01	0.5098
1995-04-01	1.1581
1995-07-01	0.9057
1995-10-01	0.8214
1996-01-01	1.1771
1996-04-01	2.2131
1996-07-01	3.2589
1996-10-01	1.1611
1997-01-01	2.0415
1997-04-01	1.9791
1997-07-01	2.0559
1997-10-01	0.5507
1998-01-01	0.6833
1998-04-01	0.7762
1998-07-01	2.5724
1998-10-01	0.8655
1999-01-01	0.8453
1999-04-01	0.8381
1999-07-01	1.9908
1999-10-01	1.4401
2000-01-01	0.7192
2000-04-01	1.5959
2000-07-01	1.1072
2000-10-01	0.9926
2001-01-01	0.8999
2001-04-01	3.0666
2001-07-01	1.6949
2001-10-01	1.1142
2002-01-01	1.0307
2002-04-01	1.1723
2002-07-01	0.8845
2002-10-01	1.4996
2003-01-01	3.4169
2003-04-01	5.0194
2003-07-01	2.3972
2003-10-01	1.1025
2004-01-01	1.7666
2004-04-01	3.3376
2004-07-01	1.4195
2004-10-01	3.8173
2005-01-01	9.7779
2005-04-01	6.4630
2005-07-01	4.6608
2005-10-01	3.8459
2006-01-01	3.7487
2006-04-01	8.9307
2006-07-01	5.3685
2006-10-01	5.7837
2007-01-01	13.4873
2007-04-01	22.5299
2007-07-01	0.9764
2007-10-01	3.8253
2008-01-01	5.9308
2008-04-01	10.3731
2008-07-01	7.7816
2008-10-01	4.5713
2009-01-01	16.3308
2009-04-01	17.6893
2009-07-01	6.2939
2009-10-01	9.0175
2010-01-01	6.2334
2010-04-01	7.7752
2010-07-01	8.3193
2010-10-01	8.1106
2011-01-01	13.6958
2011-04-01	8.6385
2011-07-01	9.4204
2011-10-01	3.1508
2012-01-01	8.9497
2012-04-01	9.0151
2012-07-01	10.8832
2012-10-01	7.8056
2013-01-01	7.5470
2013-04-01	7.4052
2013-07-01	5.5933
2013-10-01	3.9018
2014-01-01	7.9539
2014-04-01	11.5741
2014-07-01	6.3402
2014-10-01	6.5881
2015-01-01	10.1590
2015-04-01	5.6741