Quarter	Billions of US Dollars
1993-10-01	0.01600
1994-04-01	0.00400
1994-07-01	0.00860
1994-10-01	0.01410
1995-01-01	-0.00800
1995-04-01	-0.00490
1995-07-01	-0.00610
1995-10-01	0.06375
1996-01-01	0.01415
1996-04-01	0.09150
1996-07-01	0.09641
1996-10-01	-0.01710
1997-01-01	0.07236
1997-04-01	0.01177
1997-07-01	-0.02767
1997-10-01	0.01361
1998-01-01	-0.05586
1998-04-01	-0.09381
1998-07-01	-0.10770
1998-10-01	-0.06350
1999-01-01	-0.00601
1999-04-01	-0.00399
1999-07-01	-0.00738
1999-10-01	-0.00344
2000-01-01	0.00050
2000-04-01	-0.00077
2000-07-01	-0.00010
2001-04-01	-0.00033
2002-10-01	0.02500
2003-01-01	0.10000
2003-07-01	-0.02500
2003-10-01	0.05155
2004-01-01	0.07045
2004-04-01	0.22995
2004-07-01	0.14500
2004-10-01	0.02485
2005-01-01	-0.06630
2005-04-01	0.12000
2005-07-01	-0.30350
2005-10-01	0.05401
2006-01-01	0.73663
2006-04-01	0.07935
2006-07-01	0.29945
2006-10-01	-0.36489
2007-01-01	-0.42578
2007-04-01	0.38408
2007-07-01	-0.30402
2007-10-01	1.12002
2008-01-01	0.36348
2008-04-01	0.21675
2008-07-01	0.27372
2008-10-01	-0.82949
2009-01-01	-0.16992
2009-04-01	-0.04463
2009-07-01	0.55990
2009-10-01	-0.58578
2010-01-01	0.00430
2010-04-01	0.09000
2010-07-01	-0.13129
2010-10-01	-0.29383
2011-01-01	0.00850
2011-04-01	0.35546
2011-07-01	-0.02300
2011-10-01	-0.04266
2012-01-01	1.45200
2012-04-01	0.11094
2012-07-01	1.05985
2012-10-01	-2.00420
2013-01-01	0.13623
2013-04-01	0.81238
2013-07-01	0.74065
2013-10-01	-0.58437
2014-01-01	-0.26145
2014-04-01	0.80511
2014-07-01	0.41055
2014-10-01	1.71772
2015-01-01	0.06579
2015-04-01	-0.40024