| Day | Rate | Set date |
|---|---|---|
| 1 September | 17.9700 | .. |
| 2 September | 17.9700 | .. |
| 3 September | 17.7300 | .. |
| 7 September | 17.0700 | .. |
| 8 September | 17.0300 | .. |
| 9 September | 16.9700 | .. |
| 10 September | 16.7600 | .. |
| 13 September | 16.9500 | .. |
| 14 September | 16.9600 | .. |
| 15 September | 16.8600 | .. |
| 16 September | 16.8300 | .. |
| 17 September | 17.0700 | .. |
| 20 September | 17.7000 | .. |
| 21 September | 18.1200 | .. |
| 22 September | 17.5900 | .. |
| 23 September | 17.6300 | .. |
| 24 September | 17.5700 | .. |
| 27 September | 17.7300 | .. |
| 28 September | 17.9600 | .. |
| 29 September | 18.6700 | .. |
| 30 September | 18.7900 | .. |