| Day | Rate | Set date |
|---|---|---|
| 1 September | 21.1100 | .. |
| 2 September | 20.8000 | .. |
| 3 September | 21.0300 | .. |
| 6 September | 21.3600 | .. |
| 7 September | 21.9800 | .. |
| 8 September | 22.2700 | .. |
| 9 September | 23.0400 | .. |
| 10 September | 23.4400 | .. |
| 13 September | 23.4800 | .. |
| 14 September | 23.7100 | .. |
| 15 September | 23.5900 | .. |
| 16 September | 22.7200 | .. |
| 17 September | 22.8000 | .. |
| 20 September | 22.6600 | .. |
| 21 September | 22.6800 | .. |
| 22 September | 22.9300 | .. |
| 23 September | 23.8200 | .. |
| 24 September | 23.9000 | .. |
| 27 September | 24.0700 | .. |
| 28 September | 23.7600 | .. |
| 29 September | 23.8100 | .. |
| 30 September | 23.5800 | .. |