Month Sterling (millions) 2007-10-31 0 2007-11-30 0 2007-12-31 0 2008-01-31 11 2008-02-29 0 2008-03-31 0 2008-04-30 25 2008-05-31 0 2008-06-30 99 2008-07-31 2 2008-08-31 15 2008-09-30 88 2008-10-31 0 2008-11-30 6 2008-12-31 1 2009-01-31 1 2009-02-28 1 2009-03-31 1 2009-04-30 38 2009-05-31 1 2009-06-30 1 2009-07-31 1 2009-08-31 1 2009-09-30 18 2009-10-31 0 2009-11-30 106 2009-12-31 1