Quarter	Billions of US Dollars
1977-04-01	0.0500
1980-04-01	0.0300
1982-04-01	-0.0500
1982-07-01	0.0186
1982-10-01	0.0236
1983-01-01	0.0210
1983-10-01	0.0300
1984-01-01	0.1214
1984-04-01	0.1241
1984-07-01	0.0409
1984-10-01	0.0406
1985-01-01	0.0385
1985-04-01	0.0580
1985-07-01	0.1293
1985-10-01	0.0413
1986-01-01	0.0819
1986-04-01	0.1658
1986-07-01	0.1250
1986-10-01	0.0305
1987-01-01	0.0982
1987-04-01	0.1735
1987-07-01	0.3458
1987-10-01	0.0020
1988-01-01	0.4693
1988-04-01	0.6548
1988-10-01	0.6700
1989-07-01	0.0532
1989-10-01	-0.1000
1990-07-01	-0.0037
1990-10-01	-0.7600
1991-01-01	-0.7404
1991-04-01	-0.1085
1991-07-01	-0.0397
1991-10-01	0.2163
1992-04-01	-0.0929
1992-07-01	-0.2265
1992-10-01	-0.0360
1993-01-01	0.5122
1993-04-01	-0.3356
1993-07-01	0.9252
1993-10-01	1.0000
1994-01-01	0.7005
1994-04-01	-0.1204
1994-07-01	1.5169
1994-10-01	0.4477
1995-01-01	0.8476
1995-04-01	1.2129
1995-07-01	-0.0759
1995-10-01	0.5813
1996-01-01	0.8798
1996-04-01	1.2112
1996-07-01	-0.1709
1996-10-01	-0.1033
1997-01-01	0.2588
1997-04-01	0.8337
1997-07-01	0.3976
1997-10-01	0.8878
1998-01-01	0.6399
1998-04-01	0.5780
1998-07-01	-0.0128
1998-10-01	0.0133
1999-01-01	-1.6899
1999-04-01	0.2545
1999-07-01	-0.3558
1999-10-01	1.4474
2000-01-01	-0.2127
2000-04-01	0.9812
2000-07-01	0.4993
2000-10-01	0.2527
2001-01-01	2.1909
2001-04-01	0.8658
2001-07-01	0.2792
2001-10-01	0.3291
2002-01-01	2.8090
2002-04-01	2.5710
2002-07-01	0.2856
2002-10-01	-0.0448
2003-01-01	2.6154
2003-04-01	0.2943
2003-07-01	-0.1514
2003-10-01	2.4277
2004-01-01	-1.6697
2004-04-01	2.7084
2004-07-01	-0.5975
2004-10-01	0.3250
2005-01-01	0.7274
2005-04-01	0.1038
2005-07-01	-0.1802
2005-10-01	6.9666
2006-01-01	3.6217
2006-04-01	0.3021
2006-07-01	2.9639
2006-10-01	5.1012
2007-01-01	0.4638
2007-04-01	11.7547
2007-07-01	-1.7688
2007-10-01	1.6104
2008-01-01	5.5455
2008-04-01	10.8549
2008-07-01	2.6291
2008-10-01	3.4467
2009-01-01	12.0171
2009-04-01	10.8087
2009-07-01	8.0394
2009-10-01	6.7207
2010-01-01	3.0626
2010-04-01	-1.1615
2010-07-01	0.6599
2010-10-01	3.0345
2011-01-01	0.9155
2011-04-01	-9.3710
2011-07-01	-2.2554
2011-10-01	1.2567
2012-01-01	-5.3553
2012-04-01	-5.0751
2012-07-01	-6.3568
2012-10-01	1.0797
2013-01-01	-1.9123
2013-04-01	-6.5263
2013-07-01	-0.8529
2013-10-01	0.0643
2014-01-01	-2.0683
2014-04-01	-8.8484
2014-07-01	3.3494
2014-10-01	-8.9887
2015-01-01	-1.8298
2015-04-01	0.7763