| Day | Rate | Set date |
|---|---|---|
| 1 September | 69.1900 | .. |
| 5 September | 68.6000 | .. |
| 6 September | 67.5000 | .. |
| 7 September | 67.3200 | .. |
| 8 September | 66.2500 | .. |
| 11 September | 65.6100 | .. |
| 12 September | 63.7600 | .. |
| 13 September | 63.9700 | .. |
| 14 September | 63.2200 | .. |
| 15 September | 63.3300 | .. |
| 18 September | 63.8000 | .. |
| 19 September | 61.6600 | .. |
| 20 September | 60.4600 | .. |
| 21 September | 61.5900 | .. |
| 22 September | 60.5500 | .. |
| 25 September | 61.4500 | .. |
| 26 September | 61.0100 | .. |
| 27 September | 62.9600 | .. |
| 28 September | 62.7600 | .. |
| 29 September | 62.9100 | .. |