| Day | Rate | Set date |
|---|---|---|
| 1 July | 18.8100 | .. |
| 2 July | 18.8400 | .. |
| 3 July | 18.6700 | .. |
| 4 July | 18.6900 | .. |
| 5 July | 18.9200 | .. |
| 8 July | 19.2300 | .. |
| 9 July | 19.2500 | .. |
| 10 July | 19.4300 | .. |
| 11 July | 19.2500 | .. |
| 12 July | 19.7400 | .. |
| 15 July | 19.5300 | .. |
| 16 July | 19.7500 | .. |
| 17 July | 20.2100 | .. |
| 18 July | 19.8900 | .. |
| 19 July | 20.2100 | .. |
| 22 July | 19.9800 | .. |
| 23 July | 19.5000 | .. |
| 24 July | 19.6900 | .. |
| 25 July | 19.5500 | .. |
| 26 July | 19.6200 | .. |
| 29 July | 19.5700 | .. |
| 30 July | 19.5300 | .. |
| 31 July | 19.7400 | .. |