Quarter Billions of US Dollars 1993-10-01 0.69505 1995-07-01 0.05000 1997-07-01 0.10000 2002-01-01 0.08090 2004-10-01 0.14500 2010-10-01 0.75000 2013-10-01 1.25000 2014-04-01 1.00000 2015-04-01 1.50000