Quarter	Billions of US Dollars
2006-04-01	0.50000
2006-10-01	0.34000
2010-10-01	0.75000
2011-07-01	0.21500
2011-10-01	-0.50000
2012-01-01	1.50000
2012-04-01	0.56410
2012-07-01	0.13024
2012-10-01	5.25280
2013-01-01	0.93600
2013-04-01	2.05244
2013-07-01	-0.07115
2013-10-01	1.73706
2014-01-01	0.60672
2014-04-01	0.56332
2014-07-01	0.58790
2014-10-01	0.49688
2015-01-01	0.42079
2015-04-01	2.03486