Quarter	Billions of US Dollars
1969-10-01	0.0500
1970-01-01	0.0274
1971-01-01	0.0100
1972-04-01	0.0259
1973-04-01	0.0156
1974-01-01	0.0049
1974-04-01	0.0199
1975-07-01	0.0192
1976-04-01	-0.0078
1976-07-01	0.0747
1976-10-01	0.0750
1977-01-01	0.0396
1977-04-01	0.0122
1977-07-01	0.1247
1978-01-01	0.0212
1978-07-01	0.0172
1979-01-01	0.0292
1979-07-01	0.9317
1979-10-01	0.5069
1980-04-01	0.1090
1980-07-01	0.0176
1980-10-01	0.0248
1981-01-01	0.1255
1981-04-01	0.0178
1981-07-01	-0.0207
1981-10-01	0.1452
1982-01-01	0.0533
1982-04-01	0.0359
1982-07-01	0.0143
1982-10-01	0.0572
1983-01-01	0.2011
1983-04-01	0.0500
1983-07-01	0.0359
1983-10-01	0.3898
1984-01-01	0.1007
1984-04-01	0.1877
1984-07-01	0.4433
1984-10-01	0.4809
1985-01-01	0.5545
1985-04-01	0.4323
1985-07-01	0.9530
1985-10-01	0.2351
1986-01-01	1.1431
1986-04-01	0.8852
1986-07-01	1.0168
1986-10-01	0.5604
1987-01-01	0.5064
1987-04-01	0.5235
1987-07-01	0.4090
1987-10-01	-0.1171
1988-01-01	0.4423
1988-04-01	0.3432
1988-07-01	0.5883
1988-10-01	0.5438
1989-01-01	0.5601
1989-04-01	0.4154
1989-07-01	0.1886
1989-10-01	1.3915
1990-01-01	1.2126
1990-04-01	1.8084
1990-07-01	0.3551
1990-10-01	0.9392
1991-01-01	2.9643
1991-04-01	1.8702
1991-07-01	0.8075
1991-10-01	2.5033
1992-01-01	2.2542
1992-04-01	1.4449
1992-07-01	0.1729
1992-10-01	1.1030
1993-01-01	1.1139
1993-04-01	1.1433
1993-07-01	0.7359
1993-10-01	2.9851
1994-01-01	1.1498
1994-04-01	1.2668
1994-07-01	2.4303
1994-10-01	2.8132
1995-01-01	2.0605
1995-04-01	2.4191
1995-07-01	3.1698
1995-10-01	3.9494
1996-01-01	0.2740
1996-04-01	0.4451
1996-07-01	3.6730
1996-10-01	2.7505
1997-01-01	2.7503
1997-04-01	2.6114
1997-07-01	2.7398
1997-10-01	1.0171
1998-01-01	2.4543
1998-04-01	0.6525
1998-07-01	-0.7874
1998-10-01	-0.8786
1999-01-01	3.5960
1999-04-01	2.0099
1999-07-01	0.4971
1999-10-01	0.8248
2000-01-01	2.2329
2000-04-01	3.2601
2000-07-01	-0.0735
2000-10-01	1.1505
2001-01-01	8.0367
2001-04-01	5.6641
2001-07-01	1.2104
2001-10-01	-0.8869
2002-01-01	4.4097
2002-04-01	3.4969
2002-07-01	2.3415
2002-10-01	-1.0862
2003-01-01	4.6139
2003-04-01	0.4809
2003-07-01	1.3611
2003-10-01	2.2098
2004-01-01	1.9617
2004-04-01	-3.1373
2004-07-01	8.7397
2004-10-01	4.4901
2005-01-01	-0.8105
2005-04-01	8.1391
2005-07-01	3.0303
2005-10-01	3.8747
2006-01-01	9.5174
2006-04-01	3.8280
2006-07-01	-5.2759
2006-10-01	18.6727
2007-01-01	9.0210
2007-04-01	17.8927
2007-07-01	8.0939
2007-10-01	10.6177
2008-01-01	4.2490
2008-04-01	23.0505
2008-07-01	-4.4160
2008-10-01	25.8916
2009-01-01	12.4621
2009-04-01	23.2126
2009-07-01	6.8475
2009-10-01	6.4781
2010-01-01	25.8010
2010-04-01	15.5109
2010-07-01	9.5062
2010-10-01	-3.5287
2011-01-01	-4.1452
2011-04-01	0.2994
2011-07-01	-15.6134
2011-10-01	-13.9835
2012-01-01	-14.7711
2012-04-01	-0.7062
2012-07-01	-0.4741
2012-10-01	-2.8969
2013-01-01	-20.3615
2013-04-01	-7.8906
2013-07-01	10.4422
2013-10-01	34.6801
2014-01-01	-34.2856
2014-04-01	-13.6216
2014-07-01	3.1752
2014-10-01	4.0773
2015-01-01	9.2137
2015-04-01	1.7564