Month Sterling (millions) 1986-09-30 0 1986-10-31 0 1986-11-30 0 1986-12-31 0 1987-01-31 0 1987-02-28 0 1987-03-31 0 1987-04-30 0 1987-05-31 0 1987-06-30 0 1987-07-31 0 1987-08-31 0 1987-09-30 0 1987-10-31 0 1987-11-30 0 1987-12-31 0 1988-01-31 0 1988-02-29 0 1988-03-31 0 1988-04-30 0 1988-05-31 0 1988-06-30 0 1988-07-31 0 1988-08-31 0 1988-09-30 0 1988-10-31 0 1988-11-30 0 1988-12-31 0 1989-01-31 0 1989-02-28 0 1989-03-31 0 1989-04-30 0 1989-05-31 0 1989-06-30 0 1989-07-31 0 1989-08-31 0 1989-09-30 0 1989-10-31 0 1989-11-30 0 1989-12-31 0 1990-01-31 0 1990-02-28 0 1990-03-31 0 1990-04-30 0 1990-05-31 0 1990-06-30 0 1990-07-31 0 1990-08-31 0 1990-09-30 0 1990-10-31 0 1990-11-30 0 1990-12-31 0 1991-01-31 0 1991-02-28 0 1991-03-31 0 1991-04-30 0 1991-05-31 0 1991-06-30 0 1991-07-31 0