Quarter	Billions of US Dollars
1968-04-01	0.00480
1971-01-01	0.01000
1972-01-01	0.01500
1972-04-01	0.00650
1972-10-01	0.01000
1973-07-01	0.00540
1973-10-01	0.01600
1974-04-01	0.00900
1974-10-01	0.01570
1975-07-01	0.00650
1975-10-01	0.01360
1976-01-01	0.01890
1976-07-01	0.01500
1976-10-01	0.00840
1977-01-01	0.04090
1977-04-01	0.01500
1977-07-01	0.01050
1977-10-01	0.01710
1978-01-01	0.02070
1978-07-01	0.00400
1979-01-01	0.01000
1980-10-01	0.01140
1981-01-01	0.03560
1981-04-01	0.00720
1981-10-01	-0.00891
1982-01-01	0.01580
1982-04-01	0.05100
1982-07-01	-0.01183
1982-10-01	-0.01371
1983-01-01	0.05678
1983-04-01	0.02290
1983-10-01	0.01697
1984-01-01	0.01150
1984-04-01	-0.01113
1984-10-01	-0.00398
1985-04-01	0.01660
1985-07-01	0.15470
1985-10-01	0.17348
1986-01-01	0.03815
1986-04-01	0.08577
1986-07-01	0.11167
1986-10-01	0.04013
1987-01-01	0.05160
1987-04-01	0.04892
1987-07-01	0.03859
1987-10-01	0.02750
1988-01-01	0.01205
1988-04-01	0.14804
1988-07-01	0.03738
1988-10-01	0.07618
1989-01-01	0.21040
1989-04-01	0.09169
1989-07-01	0.00071
1989-10-01	0.13308
1990-01-01	-0.02302
1990-04-01	0.16529
1990-07-01	-0.03897
1990-10-01	0.15233
1991-01-01	-0.05477
1991-04-01	0.12285
1991-07-01	0.04459
1991-10-01	0.03176
1992-01-01	0.35188
1992-04-01	0.03604
1992-07-01	0.16639
1992-10-01	-0.02458
1993-01-01	0.17387
1993-04-01	0.20800
1993-07-01	0.33805
1993-10-01	0.12494
1994-01-01	0.20759
1994-04-01	-0.03572
1994-07-01	0.11596
1994-10-01	0.05587
1995-01-01	0.16929
1995-04-01	-0.05968
1995-07-01	0.05833
1995-10-01	-0.08824
1996-01-01	0.00341
1996-04-01	0.49798
1996-07-01	0.01477
1996-10-01	-0.20079
1997-01-01	-0.16535
1997-04-01	0.13976
1997-07-01	0.06685
1997-10-01	0.10735
1998-01-01	0.03053
1998-04-01	0.43422
1998-07-01	-0.22448
1998-10-01	0.58707
1999-01-01	0.37862
1999-04-01	0.19693
1999-07-01	0.05169
1999-10-01	0.26842
2000-01-01	0.70534
2000-04-01	0.32394
2000-07-01	0.01241
2000-10-01	0.87062
2001-01-01	1.03395
2001-04-01	0.33043
2001-07-01	-0.10736
2001-10-01	0.37059
2002-01-01	0.15551
2002-04-01	0.39673
2002-07-01	-0.24675
2002-10-01	-0.43632
2003-01-01	-0.00527
2003-04-01	0.85664
2003-07-01	1.21883
2003-10-01	1.42403
2004-01-01	1.36773
2004-04-01	1.15976
2004-07-01	4.52111
2004-10-01	2.94687
2005-01-01	3.85038
2005-04-01	4.56345
2005-07-01	3.57873
2005-10-01	4.25844
2006-01-01	2.40372
2006-04-01	1.26884
2006-07-01	2.04080
2006-10-01	6.15534
2007-01-01	2.92203
2007-04-01	0.88565
2007-07-01	-0.27240
2007-10-01	0.52499
2008-01-01	0.84152
2008-04-01	1.64553
2008-07-01	-1.15969
2008-10-01	-1.69226
2009-01-01	-2.88534
2009-04-01	-2.28021
2009-07-01	-1.28368
2009-10-01	-2.81643
2010-01-01	-2.65693
2010-04-01	-0.63054
2010-07-01	-0.29909
2010-10-01	-2.85536
2011-01-01	-0.66517
2011-04-01	0.72817
2011-07-01	-2.26027
2011-10-01	-3.75254
2012-01-01	-2.73805
2012-04-01	-1.24252
2012-07-01	-3.98243
2012-10-01	-2.20107
2013-01-01	-2.40659
2013-04-01	-1.59055
2013-07-01	-0.14661
2013-10-01	-0.25311
2014-01-01	-0.16342
2014-04-01	-0.35209
2014-07-01	0.91444
2014-10-01	-0.37475
2015-01-01	-0.14283
2015-04-01	-1.16704