| Day | Rate | Set date |
|---|---|---|
| 1 August | 20.8000 | .. |
| 2 August | 21.9500 | .. |
| 3 August | 23.4800 | .. |
| 6 August | 26.7800 | .. |
| 7 August | 27.4000 | .. |
| 8 August | 24.9800 | .. |
| 9 August | 24.7500 | .. |
| 10 August | 25.4700 | .. |
| 13 August | 26.5000 | .. |
| 14 August | 26.7700 | .. |
| 15 August | 26.3000 | .. |
| 16 August | 26.9200 | .. |
| 17 August | 27.1200 | .. |
| 20 August | 27.3800 | .. |
| 21 August | 27.6300 | .. |
| 22 August | 30.1900 | .. |
| 23 August | 30.8500 | .. |
| 24 August | 30.1000 | .. |
| 28 August | 26.6800 | .. |
| 29 August | 24.8000 | .. |
| 30 August | 25.9000 | .. |
| 31 August | 26.7500 | .. |