| Day | Rate | Set date |
|---|---|---|
| 2 September | 19.6500 | .. |
| 3 September | 19.6100 | .. |
| 4 September | 19.4000 | .. |
| 5 September | 19.6300 | .. |
| 8 September | 19.4500 | .. |
| 9 September | 19.4200 | .. |
| 10 September | 19.4200 | .. |
| 11 September | 19.3700 | .. |
| 12 September | 19.3200 | .. |
| 15 September | 19.2700 | .. |
| 16 September | 19.6100 | .. |
| 17 September | 19.4200 | .. |
| 18 September | 19.3800 | .. |
| 19 September | 19.3500 | .. |
| 22 September | 19.6000 | .. |
| 23 September | 19.7900 | .. |
| 24 September | 19.9400 | .. |
| 25 September | 20.3900 | .. |
| 26 September | 20.8700 | .. |
| 29 September | 21.2600 | .. |
| 30 September | 21.1800 | .. |