Quarter	Billions of US Dollars
1989-10-01	-0.12700
1990-01-01	-0.01000
1990-04-01	0.00200
1990-07-01	0.11700
1990-10-01	0.35500
1991-01-01	-0.21300
1991-04-01	0.17200
1991-07-01	-0.22000
1991-10-01	0.21000
1992-01-01	-0.29100
1992-04-01	0.02800
1992-07-01	-0.04300
1992-10-01	-0.02500
1993-01-01	0.01000
1993-04-01	0.04700
1993-07-01	0.28274
1993-10-01	0.08433
1994-01-01	0.02518
1994-04-01	0.05270
1994-07-01	0.17076
1994-10-01	-0.00681
1995-01-01	-0.01397
1995-04-01	-0.14405
1995-07-01	0.07014
1995-10-01	0.04304
1996-01-01	0.04607
1996-04-01	-0.20409
1996-07-01	0.14130
1996-10-01	0.29813
1997-01-01	0.15642
1997-04-01	0.21540
1997-07-01	-0.01216
1997-10-01	-0.39699
1998-01-01	0.11368
1998-04-01	-0.31433
1998-07-01	0.02704
1998-10-01	-0.02739
1999-01-01	-0.02809
1999-04-01	-0.11247
1999-07-01	0.17290
1999-10-01	-0.18479
2000-01-01	0.10963
2000-04-01	0.05505
2000-07-01	-0.04691
2000-10-01	-0.02099
2001-01-01	0.05317
2001-04-01	-0.13183
2001-07-01	-0.03355
2001-10-01	0.05700
2002-01-01	-0.02818
2002-04-01	-0.07310
2002-07-01	0.20667
2002-10-01	0.13148
2003-01-01	-0.04774
2003-04-01	0.01193
2003-07-01	-0.24663
2003-10-01	0.15714
2004-01-01	0.14773
2004-04-01	0.10234
2004-07-01	-0.09275
2004-10-01	-0.01245
2005-01-01	0.46234
2005-04-01	-0.05827
2005-07-01	0.68394
2005-10-01	-0.40936
2006-01-01	1.33910
2006-04-01	0.21142
2006-07-01	1.92707
2006-10-01	0.12929
2007-01-01	0.25295
2007-04-01	-0.67827
2007-07-01	-0.70172
2007-10-01	0.19163
2008-01-01	-2.03046
2008-04-01	1.14739
2008-07-01	0.83037
2008-10-01	-1.33636
2009-01-01	0.46877
2009-04-01	-0.67056
2009-07-01	0.13906
2009-10-01	-0.60396
2010-01-01	0.51511
2010-04-01	-0.00583
2010-07-01	-0.49263
2010-10-01	-0.40556
2011-01-01	0.11444
2011-04-01	-0.20625
2011-07-01	-0.04451
2011-10-01	0.04414
2012-01-01	-0.04114
2012-04-01	-0.01960
2012-07-01	-0.17991
2012-10-01	0.04899
2013-01-01	-0.24971
2013-04-01	0.33578
2013-07-01	0.52513
2013-10-01	-0.61423
2014-01-01	-0.02611
2014-04-01	-0.21111
2014-07-01	0.50297
2014-10-01	-0.01473
2015-01-01	0.37181
2015-04-01	-0.00310