Quarter	Billions of US Dollars
1993-07-01	0.02700
1993-10-01	0.01600
1994-01-01	0.01550
1994-04-01	-0.01200
1994-07-01	-0.01500
1994-10-01	-0.01000
1995-01-01	-0.02150
1995-10-01	2.10800
1996-04-01	0.19747
1996-07-01	0.12128
1996-10-01	0.00139
1997-01-01	0.00125
1997-04-01	0.00126
1997-07-01	0.13929
1997-10-01	0.00129
1998-01-01	0.00126
1998-04-01	0.35334
1998-07-01	0.00128
1998-10-01	0.20139
1999-01-01	0.00134
1999-04-01	0.00127
1999-07-01	0.11522
2002-07-01	-0.30095
2002-10-01	-2.00000
2003-07-01	-0.07500
2003-10-01	-0.20000
2004-04-01	-0.32804
2005-10-01	-0.09601
2006-07-01	-0.12122
2007-07-01	-0.16691
2009-04-01	0.20000
2012-04-01	0.50000
2013-04-01	1.43729
2013-07-01	0.28830
2013-10-01	0.18521
2014-01-01	0.23390
2014-04-01	0.94396
2014-07-01	-0.13510
2014-10-01	0.02948
2015-01-01	-0.07378
2015-04-01	-0.22790