Quarter	Billions of US Dollars
2004-01-01	0.11061
2006-01-01	0.01114
2006-10-01	0.02041
2007-01-01	0.02264
2007-04-01	0.13513
2007-07-01	0.21752
2008-01-01	0.17321
2008-04-01	0.02521
2008-07-01	0.01736
2008-10-01	0.00950
2009-07-01	0.05990
2010-01-01	0.02177
2010-04-01	0.06792
2010-07-01	0.24372
2010-10-01	0.58835
2011-01-01	0.23917
2011-04-01	0.64247
2011-07-01	1.00415
2011-10-01	0.34863
2012-04-01	0.07763
2012-07-01	0.00397
2012-10-01	0.16750
2013-01-01	0.19071
2013-04-01	0.21669
2013-07-01	0.27249
2013-10-01	0.20148
2014-01-01	0.88000
2014-04-01	0.64931
2014-07-01	0.73491
2014-10-01	1.26604
2015-01-01	1.66121
2015-04-01	0.79958