Quarter	Billions of US Dollars
1994-07-01	0.00005
2004-07-01	0.00212
2004-10-01	0.02045
2005-01-01	0.23511
2005-04-01	0.23626
2005-07-01	0.22485
2005-10-01	0.21388
2006-01-01	0.21338
2006-04-01	0.21349
2006-07-01	0.23836
2006-10-01	0.22331
2007-01-01	0.22337
2007-04-01	0.23313
2007-07-01	0.26049
2007-10-01	0.31404
2008-01-01	0.34092
2008-04-01	0.34071
2008-07-01	0.34578
2008-10-01	0.33130
2009-01-01	0.30520
2009-04-01	0.28028
2009-07-01	0.28554
2009-10-01	0.27369
2010-01-01	0.06550
2010-04-01	0.06050
2010-07-01	0.06050
2010-10-01	0.05020
2011-01-01	0.05033
2011-04-01	0.05030
2011-07-01	0.07018
2011-10-01	0.06514
2012-01-01	0.06530
2012-04-01	0.07718
2012-07-01	0.07736
2012-10-01	0.06873
2013-01-01	0.06854
2013-04-01	0.14065
2013-07-01	0.14835
2013-10-01	0.17020
2014-01-01	0.17025
2014-04-01	0.17037
2014-07-01	0.17011
2014-10-01	0.16994
2015-01-01	0.16970
2015-04-01	0.16998