Quarter	Billions of US Dollars
1987-01-01	0.12700
1987-04-01	0.12000
1987-07-01	0.08500
1987-10-01	0.05000
1988-01-01	0.05000
1988-04-01	0.05000
1988-07-01	0.05000
1988-10-01	0.05000
1989-01-01	0.05000
1989-04-01	0.05000
1989-07-01	0.05000
1989-10-01	0.05000
1990-01-01	0.05000
1990-04-01	0.05000
1990-07-01	0.05000
1990-10-01	0.05000
1991-01-01	0.05000
1991-04-01	0.05000
1991-07-01	0.05000
1991-10-01	0.05000
1992-01-01	0.05000
1992-04-01	0.05000
2002-01-01	0.45000
2002-04-01	0.45000
2002-07-01	0.45000
2002-10-01	0.45000
2003-01-01	0.45000
2003-04-01	0.45000
2003-07-01	0.45000
2003-10-01	0.65000
2004-01-01	0.65000
2004-04-01	0.65000
2004-07-01	0.65000
2004-10-01	0.65000
2005-01-01	0.20000
2005-04-01	0.20000
2005-07-01	0.88932
2005-10-01	0.94298
2006-01-01	1.47022
2006-04-01	0.80740
2006-07-01	0.37877
2006-10-01	0.60770
2007-01-01	0.60091
2007-04-01	0.71550
2007-07-01	0.53078
2007-10-01	0.42900
2008-01-01	0.49121
2008-04-01	0.45135
2008-07-01	0.43226
2008-10-01	0.12505
2009-01-01	0.10000
2009-04-01	0.10000
2009-07-01	0.10000
2009-10-01	0.10000
2010-01-01	0.10000
2010-04-01	0.10000
2010-07-01	0.20000
2010-10-01	0.20000
2011-01-01	0.20000
2011-04-01	0.20000
2011-07-01	0.20000
2011-10-01	0.55000
2012-01-01	0.55000
2012-04-01	0.63795
2012-07-01	0.60733
2012-10-01	0.55000
2013-01-01	0.55000
2013-04-01	0.55000
2013-07-01	0.48314
2013-10-01	0.48365
2014-01-01	0.48394
2014-04-01	0.98370
2014-07-01	1.45000
2014-10-01	1.45000
2015-01-01	1.45000
2015-04-01	1.45000