Quarter	Billions of US Dollars
1987-01-01	0.4593
1987-04-01	0.4443
1987-07-01	0.3743
1987-10-01	0.3743
1988-01-01	0.3743
1988-04-01	0.3593
1988-07-01	0.2943
1988-10-01	0.2893
1989-01-01	0.2893
1989-04-01	0.2088
1989-07-01	0.2088
1989-10-01	0.2088
1990-01-01	0.2088
1990-04-01	0.2088
1990-07-01	0.1288
1990-10-01	0.0888
1991-01-01	0.0888
1991-04-01	0.0888
1991-07-01	0.0888
1991-10-01	0.0888
1992-01-01	0.0888
1992-04-01	0.0888
1992-07-01	0.0888
1992-10-01	0.1228
1993-01-01	0.1198
1993-04-01	0.0888
1993-07-01	0.0888
1993-10-01	0.0888
1994-01-01	0.0888
1994-04-01	0.0888
1994-07-01	0.0888
1994-10-01	0.0888
1995-01-01	0.0888
1995-04-01	0.0888
1995-07-01	0.0888
1997-10-01	0.2750
1998-01-01	0.2750
1998-04-01	0.2750
1998-07-01	0.2750
1998-10-01	0.5250
1999-01-01	0.6750
1999-04-01	0.6750
1999-07-01	0.7350
1999-10-01	0.7350
2000-01-01	0.7350
2000-04-01	0.8050
2000-07-01	0.8050
2000-10-01	0.8050
2001-01-01	0.8050
2001-04-01	0.9050
2001-07-01	0.9050
2001-10-01	1.0250
2002-01-01	1.0250
2002-04-01	1.0250
2002-07-01	1.0250
2002-10-01	1.0250
2003-01-01	1.0250
2003-04-01	1.0250
2003-07-01	1.0250
2003-10-01	1.0250
2004-01-01	1.0250
2004-04-01	1.0250
2004-07-01	1.0250
2004-10-01	0.8500
2005-01-01	0.7000
2005-04-01	0.7000
2005-07-01	0.6880
2005-10-01	0.7880
2006-01-01	0.5505
2006-04-01	0.5505
2006-07-01	0.5505
2006-10-01	0.5505
2007-01-01	0.5505
2007-04-01	0.7005
2007-07-01	0.7005
2007-10-01	0.7005
2008-01-01	0.7005
2008-04-01	0.7005
2008-07-01	0.7005
2008-10-01	0.7005
2009-01-01	0.7005
2009-04-01	0.7005
2009-07-01	0.6525
2009-10-01	0.6525
2010-01-01	0.6525
2010-04-01	0.5825
2010-07-01	0.5825
2010-10-01	0.5825
2011-01-01	0.5825
2011-04-01	0.4825
2011-07-01	0.4825
2011-10-01	0.2625
2012-01-01	0.2625
2012-04-01	0.1125
2012-07-01	0.1125
2013-04-01	0.1500
2013-07-01	0.1500
2013-10-01	0.1500
2014-01-01	0.1500
2014-04-01	0.1500
2014-07-01	0.1500
2014-10-01	0.1500
2015-01-01	0.1500
2015-04-01	0.1500