| Day | Rate | Set date |
|---|---|---|
| 1 September | 18.8500 | .. |
| 5 September | 19.0500 | .. |
| 6 September | 19.2800 | .. |
| 7 September | 19.4100 | .. |
| 8 September | 19.7500 | .. |
| 11 September | 19.7600 | .. |
| 12 September | 19.7000 | .. |
| 13 September | 19.8600 | .. |
| 14 September | 19.7200 | .. |
| 15 September | 19.9600 | .. |
| 18 September | 19.8800 | .. |
| 19 September | 19.5600 | .. |
| 20 September | 19.6400 | .. |
| 21 September | 19.6400 | .. |
| 22 September | 19.2800 | .. |
| 25 September | 19.4600 | .. |
| 26 September | 19.5300 | .. |
| 27 September | 19.5900 | .. |
| 28 September | 19.8600 | .. |
| 29 September | 20.1300 | .. |