Quarter	Billions of US Dollars
1994-01-01	0.00003
1997-01-01	-3.53423
1997-04-01	0.25000
2002-04-01	0.10000
2003-10-01	0.15000
2005-01-01	0.15000
2007-04-01	0.42918
2007-07-01	0.06871
2007-10-01	0.14493
2008-01-01	-0.00014
2008-04-01	0.85310
2008-07-01	0.63015
2008-10-01	-0.15000
2009-01-01	0.19527
2009-04-01	-0.20000
2009-07-01	0.07151
2009-10-01	0.21000
2010-04-01	0.23115
2010-07-01	0.45190
2010-10-01	0.13584
2011-01-01	0.00901
2011-04-01	-0.40140
2011-07-01	-0.32907
2011-10-01	0.11546
2012-01-01	0.09642
2012-04-01	0.34369
2012-07-01	-0.11756
2012-10-01	0.74777
2013-01-01	-0.01640
2013-04-01	0.76510
2013-07-01	0.04323
2013-10-01	0.08355
2014-01-01	-0.01690
2014-04-01	-0.39066
2014-07-01	0.66618
2014-10-01	-0.00454
2015-01-01	-0.05067
2015-04-01	-0.04466