Quarter	Billions of US Dollars
1998-07-01	0.06527
1998-10-01	0.06531
1999-01-01	0.07248
1999-04-01	0.07190
1999-07-01	0.00956
1999-10-01	0.00982
2000-07-01	0.16169
2000-10-01	0.08326
2001-01-01	0.07903
2001-04-01	0.07588
2003-10-01	0.25260
2004-01-01	0.24448
2004-04-01	0.24310
2004-07-01	0.24818
2004-10-01	0.20000
2005-01-01	0.20000
2005-04-01	0.20000
2005-07-01	0.20000
2005-10-01	0.20000
2006-01-01	0.20000
2006-04-01	0.45426
2006-07-01	0.45320
2006-10-01	0.26340
2007-01-01	0.26636
2013-04-01	0.29003
2013-07-01	0.29945
2013-10-01	0.30580
2014-01-01	0.30573