| Day | Rate | Set date |
|---|---|---|
| 2 September | 20.6300 | .. |
| 3 September | 20.5800 | .. |
| 4 September | 20.2500 | .. |
| 5 September | 20.1300 | .. |
| 6 September | 20.0700 | .. |
| 9 September | 19.8400 | .. |
| 10 September | 19.9500 | .. |
| 11 September | 20.1600 | .. |
| 12 September | 20.1400 | .. |
| 13 September | 20.3200 | .. |
| 16 September | 20.4200 | .. |
| 17 September | 20.2300 | .. |
| 18 September | 20.4100 | .. |
| 19 September | 20.2700 | .. |
| 20 September | 20.4400 | .. |
| 23 September | 20.6200 | .. |
| 24 September | 20.7500 | .. |
| 25 September | 20.7300 | .. |
| 26 September | 20.8800 | .. |
| 27 September | 21.1700 | .. |
| 30 September | 21.0500 | .. |