Quarter	Billions of US Dollars
2003-04-01	0.25711
2003-07-01	0.26217
2003-10-01	0.28417
2004-01-01	0.27504
2007-10-01	0.29442
2008-01-01	0.31624
2008-04-01	0.31528
2008-07-01	0.28606
2013-04-01	0.52320
2013-07-01	0.54020
2013-10-01	0.55164
2014-01-01	0.55152