| Day | Rate | Set date |
|---|---|---|
| 1 September | 21.9900 | .. |
| 2 September | 21.4900 | .. |
| 3 September | 22.0000 | .. |
| 7 September | 22.6100 | .. |
| 8 September | 22.6600 | .. |
| 9 September | 23.2000 | .. |
| 10 September | 23.5500 | .. |
| 13 September | 24.2100 | .. |
| 14 September | 23.8600 | .. |
| 15 September | 24.1300 | .. |
| 16 September | 24.5100 | .. |
| 17 September | 24.7200 | .. |
| 20 September | 24.2900 | .. |
| 21 September | 24.4600 | .. |
| 22 September | 24.1200 | .. |
| 23 September | 24.8700 | .. |
| 24 September | 24.7600 | .. |
| 27 September | 24.6100 | .. |
| 28 September | 24.3300 | .. |
| 29 September | 24.6900 | .. |
| 30 September | 24.5100 | .. |