Month Sterling (millions) 2008-01-31 21046 2008-02-29 20361 2008-03-31 20157 2008-04-30 20101 2008-05-31 20440 2008-06-30 19409 2008-07-31 20485 2008-08-31 21205 2008-09-30 19429 2008-10-31 19442 2008-11-30 18970 2008-12-31 22012 2009-01-31 18757 2009-02-28 18756 2009-03-31 18516 2009-04-30 18870 2009-05-31 18178 2009-06-30 19506 2009-07-31 19178 2009-08-31 18176 2009-09-30 18556 2009-10-31 17955 2009-11-30 18070 2009-12-31 17163