| Day | Rate | Set date |
|---|---|---|
| 1 August | 21.0400 | .. |
| 2 August | 21.3400 | .. |
| 5 August | 21.2300 | .. |
| 6 August | 21.1300 | .. |
| 7 August | 21.4200 | .. |
| 8 August | 21.5500 | .. |
| 9 August | 21.5700 | .. |
| 12 August | 22.2200 | .. |
| 13 August | 22.3700 | .. |
| 14 August | 22.1200 | .. |
| 15 August | 21.9000 | .. |
| 16 August | 22.6600 | .. |
| 19 August | 23.2600 | .. |
| 20 August | 22.8600 | .. |
| 21 August | 21.7200 | .. |
| 22 August | 22.3000 | .. |
| 23 August | 21.9600 | .. |
| 26 August | 21.6200 | .. |
| 27 August | 21.5600 | .. |
| 28 August | 21.7100 | .. |
| 29 August | 22.1500 | .. |
| 30 August | 22.2500 | .. |