Quarter	Billions of US Dollars
1987-01-01	0.0400
1987-04-01	0.0400
1987-07-01	0.0400
1987-10-01	0.0400
1988-01-01	0.0400
1988-04-01	0.0400
1988-07-01	0.0400
1988-10-01	0.0400
1989-01-01	0.0400
1994-07-01	0.1000
1994-10-01	0.1000
1995-01-01	0.1000
1995-04-01	0.1000
1995-07-01	0.1000
1995-10-01	0.1000
1996-01-01	0.1000
1996-04-01	0.1000
1996-07-01	0.1000
1996-10-01	0.1000
1997-01-01	0.1000
1997-04-01	0.3119
1997-07-01	0.3094
1997-10-01	0.3000
1998-01-01	0.3000
1998-04-01	0.3000
1998-07-01	0.3000
1998-10-01	0.3000
1999-01-01	0.3000
1999-04-01	0.3000
1999-07-01	0.3000
1999-10-01	0.3000
2000-01-01	0.3000
2000-04-01	0.3500
2000-07-01	0.3500
2000-10-01	0.3500
2001-01-01	0.3500
2001-04-01	0.3000
2001-07-01	0.3000
2001-10-01	0.3000
2002-01-01	0.6000
2002-04-01	0.9800
2002-07-01	1.3800
2002-10-01	1.5300
2003-01-01	1.5300
2003-04-01	1.6300
2003-07-01	1.6307
2003-10-01	1.9305
2004-01-01	2.1551
2004-04-01	2.8050
2004-07-01	2.7050
2004-10-01	2.7053
2005-01-01	2.7050
2005-04-01	3.1054
2005-07-01	3.3055
2005-10-01	3.3056
2006-01-01	3.3055
2006-04-01	3.2050
2006-07-01	3.4050
2006-10-01	3.4050
2007-01-01	3.4050
2007-04-01	3.2050
2007-07-01	2.8250
2007-10-01	2.8250
2008-01-01	2.6750
2008-04-01	2.6750
2008-07-01	3.0942
2008-10-01	2.7919
2009-01-01	2.5449
2009-04-01	2.2639
2009-07-01	1.9243
2009-10-01	1.9275
2010-01-01	1.9277
2010-04-01	1.9282
2010-07-01	1.9554
2010-10-01	1.9660
2011-01-01	2.2755
2011-04-01	3.1017
2011-07-01	3.0305
2011-10-01	3.2324
2012-01-01	3.9582
2012-04-01	5.2987
2012-07-01	7.1059
2012-10-01	7.0880
2013-01-01	7.4971
2013-04-01	7.6883
2013-07-01	7.8476
2013-10-01	8.0082
2014-01-01	8.6836
2014-04-01	9.3076
2014-07-01	10.3266
2014-10-01	11.7287
2015-01-01	11.8185
2015-04-01	12.8262