| Day | Rate | Set date |
|---|---|---|
| 1 April | 18.4000 | .. |
| 2 April | 18.3300 | .. |
| 3 April | 18.7600 | .. |
| 6 April | 18.9700 | .. |
| 7 April | 18.8300 | .. |
| 8 April | 19.1800 | .. |
| 9 April | 18.9100 | .. |
| 10 April | 19.0900 | .. |
| 13 April | 18.8900 | .. |
| 14 April | 18.5900 | .. |
| 15 April | 18.6300 | .. |
| 16 April | 18.9900 | .. |
| 21 April | 19.0400 | .. |
| 22 April | 18.7600 | .. |
| 23 April | 18.7500 | .. |
| 24 April | 18.8600 | .. |
| 27 April | 18.9500 | .. |
| 28 April | 19.1100 | .. |
| 29 April | 19.4700 | .. |
| 30 April | 19.6600 | .. |