Quarter	Billions of US Dollars
1997-01-01	0.22873
2002-01-01	-0.00343
2002-07-01	-0.00343
2003-01-01	-0.00457
2003-07-01	-0.00457
2004-01-01	-0.00457
2004-07-01	-0.00457
2005-01-01	-0.00457
2005-07-01	-0.00457
2005-10-01	0.17599
2006-01-01	-0.00686
2006-07-01	-0.00686
2007-01-01	-0.00686
2007-07-01	-0.00686
2008-01-01	-0.01029
2008-07-01	-0.01029
2009-01-01	-0.01601
2009-07-01	0.22788
2010-01-01	-0.01601
2010-07-01	-0.01601
2011-01-01	-0.02059
2011-07-01	-0.02060
2012-01-01	-0.02060
2012-07-01	-0.02060
2013-01-01	-0.23102
2014-07-01	0.67732