Month Sterling (millions) 2010-01-31 -7 2010-02-28 3 2010-03-31 17 2010-04-30 -1 2010-05-31 1 2010-06-30 11 2010-07-31 6 2010-08-31 -9 2010-09-30 -9 2010-10-31 -13 2010-11-30 11 2010-12-31 14 2011-01-31 -40 2011-02-28 20 2011-03-31 22 2011-04-30 -6 2011-05-31 -3 2011-06-30 -15 2011-07-31 2 2011-08-31 -23 2011-09-30 -5 2011-10-31 17 2011-11-30 27 2011-12-31 32 2012-01-31 13 2012-02-29 22 2012-03-31 23 2012-04-30 -20 2012-05-31 11 2012-06-30 1 2012-07-31 16 2012-08-31 13 2012-09-30 -3 2012-10-31 5 2012-11-30 -17 2012-12-31 17 2013-01-31 2 2013-02-28 -2 2013-03-31 5 2013-04-30 1 2013-05-31 -11 2013-06-30 -11 2013-07-31 33 2013-08-31 -3 2013-09-30 -29 2013-10-31 -3 2013-11-30 -3