Quarter	Billions of US Dollars
1989-04-01	-0.16254
1993-01-01	-0.10000
1993-10-01	-0.01000
1994-07-01	0.01500
1994-10-01	-0.01500
1995-10-01	0.03000
1996-01-01	0.01600
1996-04-01	0.13655
1996-07-01	0.17788
1996-10-01	0.17486
1997-01-01	0.14526
1997-04-01	0.02676
1997-07-01	0.28008
1997-10-01	-0.48483
1998-01-01	-0.07426
1998-04-01	-0.09650
1998-07-01	-0.14849
1998-10-01	-0.10988
1999-01-01	-0.03026
1999-04-01	0.05969
1999-07-01	0.06700
1999-10-01	-0.09625
2000-01-01	-0.02048
2000-04-01	-0.00264
2000-07-01	-0.00102
2001-04-01	0.00000
2001-10-01	-0.00949
2002-01-01	-0.00650
2002-04-01	-0.00303
2002-10-01	-0.00304
2003-04-01	-0.00303
2004-04-01	0.00010
2004-07-01	-0.00010
2004-10-01	0.30010
2005-01-01	-0.00010
2005-04-01	0.00900
2005-07-01	0.02600
2005-10-01	0.03750
2006-01-01	-0.03500
2006-04-01	-0.00822
2006-07-01	-0.00480
2006-10-01	-0.00550
2007-01-01	-0.00700
2007-07-01	-0.03000
2007-10-01	0.03000
2008-01-01	0.00028
2008-04-01	0.00618
2008-07-01	0.00035
2008-10-01	0.00002
2009-01-01	0.00046
2009-04-01	-0.03366
2009-07-01	0.02714
2009-10-01	-0.29858
2010-01-01	0.12191
2010-04-01	0.00125
2010-07-01	0.01195
2010-10-01	0.05187
2011-01-01	0.04174
2011-04-01	0.50131
2011-07-01	0.01192
2011-10-01	-0.00099
2012-01-01	0.01490
2012-04-01	-0.12264
2012-07-01	-0.01263
2012-10-01	0.50181
2013-01-01	0.01011
2013-04-01	0.03633
2013-07-01	0.04089
2013-10-01	0.09761
2014-01-01	0.58790
2014-04-01	-0.24393
2014-07-01	-0.00351
2014-10-01	-0.02266
2015-01-01	-0.02589
2015-04-01	-0.00374