| Day | Rate | Set date |
|---|---|---|
| 1 August | 21.2700 | .. |
| 2 August | 21.3200 | .. |
| 5 August | 21.4700 | .. |
| 6 August | 21.3700 | .. |
| 7 August | 21.3600 | .. |
| 8 August | 21.5800 | .. |
| 9 August | 21.6200 | .. |
| 12 August | 21.6900 | .. |
| 13 August | 21.5800 | .. |
| 14 August | 21.2700 | .. |
| 15 August | 21.4400 | .. |
| 16 August | 21.3000 | .. |
| 19 August | 22.4700 | .. |
| 20 August | 22.2700 | .. |
| 21 August | 21.5500 | .. |
| 22 August | 21.7200 | .. |
| 23 August | 21.8100 | .. |
| 26 August | 21.9700 | .. |
| 27 August | 21.9800 | .. |
| 28 August | 21.7400 | .. |
| 29 August | 21.9700 | .. |
| 30 August | 22.2600 | .. |