| Day | Rate | Set date |
|---|---|---|
| 1 September | 15.0800 | .. |
| 2 September | 14.7900 | .. |
| 6 September | 14.2400 | .. |
| 7 September | 14.1600 | .. |
| 8 September | 14.4800 | .. |
| 9 September | 14.1800 | .. |
| 12 September | 14.4900 | .. |
| 13 September | 14.5600 | .. |
| 14 September | 15.4000 | .. |
| 15 September | 14.9000 | .. |
| 16 September | 14.5700 | .. |
| 19 September | 14.7300 | .. |
| 20 September | 15.0400 | .. |
| 21 September | 15.0200 | .. |
| 22 September | 14.6500 | .. |
| 23 September | 14.1800 | .. |
| 26 September | 14.2000 | .. |
| 27 September | 14.1400 | .. |
| 28 September | 14.1100 | .. |
| 29 September | 13.9200 | .. |
| 30 September | 13.3700 | .. |