| Day | Rate | Set date |
|---|---|---|
| 1 August | 17.7000 | .. |
| 2 August | 17.7800 | .. |
| 3 August | 17.7200 | .. |
| 4 August | 17.7100 | .. |
| 7 August | 17.6500 | .. |
| 8 August | 17.7900 | .. |
| 9 August | 17.7800 | .. |
| 10 August | 17.8900 | .. |
| 11 August | 17.8600 | .. |
| 14 August | 17.4800 | .. |
| 15 August | 17.4700 | .. |
| 16 August | 17.5500 | .. |
| 17 August | 17.6600 | .. |
| 18 August | 17.8700 | .. |
| 21 August | 18.2500 | .. |
| 22 August | 18.5400 | .. |
| 23 August | 18.0000 | .. |
| 24 August | 17.8600 | .. |
| 25 August | 17.8600 | .. |
| 28 August | 17.8200 | .. |
| 29 August | 17.8200 | .. |
| 30 August | 17.7900 | .. |
| 31 August | 17.8400 | .. |