| Day | Rate | Set date |
|---|---|---|
| 1 May | 27.3300 | .. |
| 2 May | 27.3600 | .. |
| 3 May | 27.2900 | .. |
| 6 May | 27.1900 | .. |
| 7 May | 27.3100 | .. |
| 8 May | 27.1700 | .. |
| 9 May | 27.5800 | .. |
| 10 May | 27.3800 | .. |
| 13 May | 27.5900 | .. |
| 14 May | 27.6600 | .. |
| 15 May | 27.7900 | .. |
| 16 May | 27.9300 | .. |
| 17 May | 27.8000 | .. |
| 20 May | 27.9000 | .. |
| 21 May | 28.0000 | .. |
| 22 May | 27.1000 | .. |
| 23 May | 27.6000 | .. |
| 24 May | 27.7000 | .. |
| 28 May | 27.5700 | .. |
| 29 May | 27.6400 | .. |
| 30 May | 27.9200 | .. |
| 31 May | 27.8400 | .. |