Quarter	Billions of US Dollars
1993-07-01	0.15000
1993-10-01	0.15000
1994-01-01	0.15000
1994-04-01	0.15000
1994-07-01	0.15000
1994-10-01	0.15000
1995-01-01	0.15000
1995-04-01	0.15000
1995-07-01	0.15000
1995-10-01	0.15000
1996-01-01	0.15000
1996-04-01	0.15000
1996-07-01	0.15000
1996-10-01	0.15000
1997-01-01	0.15000
1997-04-01	0.15000
1997-07-01	0.15000
1997-10-01	0.15000
1998-01-01	0.25000
1998-04-01	0.25000
1998-07-01	0.25000
1998-10-01	0.25000
1999-01-01	0.25000
1999-04-01	0.25000
1999-07-01	0.25000
1999-10-01	0.25000
2000-01-01	0.25000
2000-04-01	0.25000
2000-07-01	0.25000
2000-10-01	0.25000
2001-01-01	0.25000
2001-04-01	0.25000
2001-07-01	0.25000
2001-10-01	0.25000
2002-01-01	0.25000
2002-04-01	0.10000
2002-07-01	0.10000
2002-10-01	0.10000
2003-01-01	0.10000
2003-04-01	0.10000
2003-07-01	0.10000
2003-10-01	0.10000
2004-01-01	0.10000
2004-04-01	0.10000
2004-07-01	0.10000
2004-10-01	0.10000
2005-01-01	0.10000
2005-04-01	0.10000
2005-07-01	0.10000
2005-10-01	0.10000
2006-01-01	0.10000
2006-04-01	0.10000
2006-07-01	0.10000
2006-10-01	0.10000
2007-01-01	0.10000
2007-04-01	0.50515
2007-07-01	0.52537
2007-10-01	0.54163
2008-01-01	0.47436
2008-04-01	0.47292
2008-07-01	0.42909
2008-10-01	0.41751
2009-01-01	0.39924
2009-04-01	0.42402
2009-07-01	0.43929
2009-10-01	0.38545
2010-01-01	0.36064
2010-04-01	0.91119
2010-07-01	1.01345
2010-10-01	0.99221
2011-01-01	1.05496
2011-04-01	1.23822
2011-07-01	1.16768
2011-10-01	1.12580
2012-01-01	1.15676
2012-04-01	1.09988
2012-07-01	1.12513
2012-10-01	1.14473
2013-01-01	1.12537
2013-04-01	1.14600
2013-07-01	1.17788
2013-10-01	1.19932
2014-01-01	1.19910
2014-04-01	1.18935
2014-07-01	1.63092
2014-10-01	1.57943
2015-01-01	1.41842
2015-04-01	1.46852