Month Sterling (millions) 2009-07-31 119 2009-08-31 10 2009-09-30 -33 2009-10-31 115 2009-11-30 121 2009-12-31 105 2010-01-31 -98 2010-02-28 62 2010-03-31 -61 2010-04-30 -7 2010-05-31 252 2010-06-30 471 2010-07-31 -549 2010-08-31 -157 2010-09-30 -130 2010-10-31 133 2010-11-30 -173 2010-12-31 -158