Quarter	Billions of US Dollars
2005-07-01	0.00201
2006-04-01	-0.00201
2006-07-01	0.01798
2006-10-01	0.08511
2007-01-01	-0.04346
2007-04-01	0.00382
2007-07-01	-0.01870
2007-10-01	-0.02650
2008-01-01	-0.01173
2008-04-01	0.03084
2008-07-01	-0.01369
2008-10-01	-0.02594
2009-01-01	-0.00471
2011-07-01	0.00700
2011-10-01	0.11546
2012-01-01	-0.03466
2012-04-01	0.14891
2012-07-01	0.03247
2012-10-01	-0.14868
2013-01-01	-0.01640
2013-04-01	0.13451
2013-07-01	0.04284
2013-10-01	-0.00159
2014-01-01	-0.01690
2014-04-01	-0.04868
2014-07-01	0.00862
2014-10-01	0.05727
2015-01-01	-0.03029
2015-04-01	-0.00605