| Day | Rate | Set date |
|---|---|---|
| 1 July | 19.5300 | .. |
| 5 July | 19.6200 | .. |
| 6 July | 19.2400 | .. |
| 7 July | 19.1200 | .. |
| 8 July | 19.4800 | .. |
| 11 July | 20.1800 | .. |
| 12 July | 20.4300 | .. |
| 13 July | 20.1500 | .. |
| 14 July | 20.1800 | .. |
| 15 July | 19.8900 | .. |
| 18 July | 19.5100 | .. |
| 19 July | 19.4600 | .. |
| 20 July | 19.2000 | .. |
| 21 July | 19.3900 | .. |
| 22 July | 19.6100 | .. |
| 25 July | 19.4100 | .. |
| 26 July | 19.2100 | .. |
| 27 July | 19.4600 | .. |
| 28 July | 19.7700 | .. |
| 29 July | 20.3000 | .. |