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	0.20345
2008-01-01	0.02281
2008-04-01	0.09182
2008-07-01	0.01736
2008-10-01	0.00950
2009-07-01	0.05990
2009-10-01	-0.04910
2010-04-01	-0.00860
2010-07-01	0.21102
2010-10-01	0.58835
2011-01-01	0.10101
2011-04-01	0.43326
2011-07-01	1.01049
2012-01-01	0.34863
2012-04-01	0.05914
2012-07-01	-0.20241
2012-10-01	0.12687
2013-01-01	-0.03693
2013-04-01	-0.12159
2013-07-01	0.19574
2013-10-01	-0.06765
2014-01-01	0.32968
2014-04-01	0.30498
2014-07-01	0.67811
2014-10-01	1.29313
2015-01-01	1.65246
2015-04-01	0.39804