Month Sterling (millions) 2008-01-31 0 2008-02-29 0 2008-03-31 0 2008-04-30 0 2008-05-31 0 2008-06-30 0 2008-07-31 1 2008-08-31 -1 2008-09-30 0 2008-10-31 15 2008-11-30 -13 2008-12-31 -2 2009-01-31 0 2009-02-28 0 2009-03-31 1 2009-04-30 -1 2009-05-31 0 2009-06-30 13 2009-07-31 -3 2009-08-31 -5 2009-09-30 -4 2009-10-31 0 2009-11-30 0 2009-12-31 0