Month	Sterling (millions)
1986-09-30	0
1986-10-31	307
1986-11-30	306
1986-12-31	321
1987-01-31	256
1987-02-28	245
1987-03-31	315
1987-04-30	349
1987-05-31	473
1987-06-30	370
1987-07-31	412
1987-08-31	437
1987-09-30	455
1987-10-31	464
1987-11-30	428
1987-12-31	284
1988-01-31	123
1988-02-29	135
1988-03-31	74
1988-04-30	131
1988-05-31	156
1988-06-30	110
1988-07-31	112
1988-08-31	122
1988-09-30	147
1988-10-31	219
1988-11-30	122
1988-12-31	125
1989-01-31	78
1989-02-28	161
1989-03-31	89
1989-04-30	160
1989-05-31	155
1989-06-30	127
1989-07-31	62
1989-08-31	81
1989-09-30	144
1989-10-31	125
1989-11-30	102
1989-12-31	101
1990-01-31	90
1990-02-28	114
1990-03-31	89
1990-04-30	176
1990-05-31	105
1990-06-30	161
1990-07-31	116
1990-08-31	131
1990-09-30	129