| Day | Rate | Set date |
|---|---|---|
| 1 August | 19.4000 | .. |
| 2 August | 19.5000 | .. |
| 5 August | 19.5300 | .. |
| 6 August | 19.4300 | .. |
| 7 August | 19.4300 | .. |
| 8 August | 19.6200 | .. |
| 9 August | 19.6000 | .. |
| 12 August | 19.6200 | .. |
| 13 August | 19.5000 | .. |
| 14 August | 19.2700 | .. |
| 15 August | 19.3100 | .. |
| 16 August | 19.4800 | .. |
| 19 August | 20.5300 | .. |
| 20 August | 20.6500 | .. |
| 21 August | 19.6400 | .. |
| 22 August | 19.7900 | .. |
| 23 August | 19.9800 | .. |
| 27 August | 20.1100 | .. |
| 28 August | 20.0300 | .. |
| 29 August | 20.3200 | .. |
| 30 August | 20.7000 | .. |