| Day | Rate | Set date |
|---|---|---|
| 1 July | 17.6200 | .. |
| 2 July | 17.6600 | .. |
| 5 July | 18.1800 | .. |
| 6 July | 18.1000 | .. |
| 7 July | 18.1500 | .. |
| 8 July | 18.2400 | .. |
| 9 July | 18.5100 | .. |
| 12 July | 18.5900 | .. |
| 13 July | 19.0300 | .. |
| 14 July | 18.9400 | .. |
| 15 July | 19.0300 | .. |
| 16 July | 19.3500 | .. |
| 19 July | 19.2000 | .. |
| 20 July | 18.5500 | .. |
| 21 July | 18.5800 | .. |
| 22 July | 18.8500 | .. |
| 23 July | 19.5300 | .. |
| 26 July | 19.3600 | .. |
| 27 July | 19.1300 | .. |
| 28 July | 19.3400 | .. |
| 29 July | 19.8000 | .. |
| 30 July | 19.3700 | .. |