| Day | Rate | Set date |
|---|---|---|
| 1 September | 17.2000 | .. |
| 4 September | 17.3600 | .. |
| 5 September | 17.4200 | .. |
| 6 September | 17.7400 | .. |
| 7 September | 17.7600 | .. |
| 8 September | 17.7200 | .. |
| 11 September | 17.7200 | .. |
| 12 September | 17.6600 | .. |
| 13 September | 17.7700 | .. |
| 14 September | 17.6500 | .. |
| 15 September | 17.5800 | .. |
| 18 September | 17.7800 | .. |
| 19 September | 17.7100 | .. |
| 20 September | 17.6800 | .. |
| 21 September | 17.7500 | .. |
| 22 September | 17.6000 | .. |
| 25 September | 17.4900 | .. |
| 26 September | 17.5000 | .. |
| 27 September | 17.5000 | .. |
| 28 September | 17.8900 | .. |
| 29 September | 18.1600 | .. |