Month Sterling (millions) 2009-07-31 351 2009-08-31 30 2009-09-30 -345 2009-10-31 -91 2009-11-30 -45 2009-12-31 -135 2010-01-31 -41 2010-02-28 -29 2010-03-31 141 2010-04-30 40 2010-05-31 -50 2010-06-30 9 2010-07-31 21 2010-08-31 -178 2010-09-30 -118 2010-10-31 8 2010-11-30 121 2010-12-31 157