| Day | Rate | Set date |
|---|---|---|
| 1 April | 18.7800 | .. |
| 2 April | 18.9100 | .. |
| 3 April | 18.7000 | .. |
| 6 April | 18.6700 | .. |
| 7 April | 18.8400 | .. |
| 8 April | 18.6500 | .. |
| 9 April | 18.5900 | .. |
| 10 April | 18.1100 | .. |
| 13 April | 18.0100 | .. |
| 14 April | 17.9800 | .. |
| 15 April | 18.4700 | .. |
| 16 April | 18.6400 | .. |
| 20 April | 18.6500 | .. |
| 21 April | 19.0300 | .. |
| 22 April | 19.0300 | .. |
| 23 April | 19.0300 | .. |
| 24 April | 18.6800 | .. |
| 27 April | 18.8300 | .. |
| 28 April | 18.8400 | .. |
| 29 April | 18.6000 | .. |
| 30 April | 18.7300 | .. |