Quarter	Billions of US Dollars
2005-01-01	0.11685
2005-04-01	0.11020
2005-07-01	0.10996
2005-10-01	0.10812
2006-01-01	0.11042
2006-04-01	0.11522
2006-07-01	0.11455
2006-10-01	0.11825
2007-01-01	0.11923
2007-04-01	0.12076
2007-07-01	0.12564
2007-10-01	0.12965
2008-01-01	0.13778
2008-04-01	0.13724
2008-07-01	0.12664
2008-10-01	0.12348
2009-01-01	0.11917
2009-04-01	0.12504
2009-07-01	0.12867
2009-10-01	0.12722
2010-01-01	0.12074
2010-04-01	0.11143
2010-07-01	0.12164
2010-10-01	0.11966
2011-01-01	0.12566
2011-04-01	0.12782
2011-07-01	0.12012
2011-10-01	0.11659
2014-07-01	0.07259
2014-10-01	0.07042
2015-01-01	0.06396
2015-04-01	0.06396