| Day | Rate | Set date |
|---|---|---|
| 1 May | 25.8700 | .. |
| 2 May | 25.4300 | .. |
| 3 May | 25.7500 | .. |
| 7 May | 25.4100 | .. |
| 8 May | 26.0300 | .. |
| 9 May | 25.9400 | .. |
| 10 May | 26.3800 | .. |
| 13 May | 26.5800 | .. |
| 14 May | 27.3100 | .. |
| 15 May | 26.1700 | .. |
| 16 May | 26.2200 | .. |
| 17 May | 26.3600 | .. |
| 20 May | 26.3800 | .. |
| 21 May | 25.6000 | .. |
| 22 May | 25.5000 | .. |
| 23 May | 25.3900 | .. |
| 24 May | 25.1800 | .. |
| 27 May | 24.9400 | .. |
| 28 May | 24.7600 | .. |
| 29 May | 25.1200 | .. |
| 30 May | 24.0500 | .. |
| 31 May | 24.4500 | .. |