| Day | Rate | Set date |
|---|---|---|
| 2 May | 30.6100 | .. |
| 3 May | 30.5000 | .. |
| 4 May | 30.4200 | .. |
| 5 May | 30.2000 | .. |
| 6 May | 30.1200 | .. |
| 9 May | 30.1000 | .. |
| 10 May | 30.3100 | .. |
| 11 May | 29.9700 | .. |
| 12 May | 29.7200 | .. |
| 13 May | 29.8000 | .. |
| 16 May | 30.1200 | .. |
| 17 May | 29.9100 | .. |
| 18 May | 29.7500 | .. |
| 19 May | 29.9500 | .. |
| 20 May | 30.3000 | .. |
| 23 May | 30.2700 | .. |
| 24 May | 30.0500 | .. |
| 25 May | 30.2500 | .. |
| 26 May | 30.3100 | .. |
| 27 May | 30.1900 | .. |
| 31 May | 30.2500 | .. |