Month	Sterling (millions)
2009-07-31	18
2009-08-31	-17
2009-09-30	1
2009-10-31	163
2009-11-30	-1
2009-12-31	-137
2010-01-31	31
2010-02-28	-145
2010-03-31	-254
2010-04-30	-103
2010-05-31	153
2010-06-30	413
2010-07-31	-551
2010-08-31	-139
2010-09-30	-77
2010-10-31	61
2010-11-30	-56
2010-12-31	-415