Quarter	Billions of US Dollars
1994-04-01	0.15540
2001-04-01	-0.07694
2002-04-01	-0.07693
2003-07-01	0.12000
2005-10-01	0.60000
2008-07-01	-0.12000
2010-01-01	-0.25000
2010-04-01	0.25000
2010-07-01	0.12868
2010-10-01	-0.59976
2011-01-01	0.30383
2012-01-01	-0.15853
2012-07-01	0.05271
2012-10-01	0.14036
2013-01-01	0.80934
2013-04-01	-0.00967
2013-07-01	-0.12105
2013-10-01	-0.03637
2014-01-01	-0.03392
2014-04-01	0.08668
2014-07-01	0.33622
2014-10-01	-0.07476
2015-04-01	-0.07378