| Day | Rate | Set date |
|---|---|---|
| 1 May | 3.7350 | .. |
| 2 May | 3.6840 | .. |
| 3 May | 3.7450 | .. |
| 6 May | 3.5950 | .. |
| 7 May | 3.6730 | .. |
| 8 May | 3.7460 | .. |
| 9 May | 3.7190 | .. |
| 10 May | 3.7490 | .. |
| 13 May | 3.7830 | .. |
| 14 May | 3.8550 | .. |
| 15 May | 3.6400 | .. |
| 16 May | 3.6090 | .. |
| 17 May | 3.5980 | .. |
| 20 May | 3.4900 | .. |
| 21 May | 3.3950 | .. |
| 22 May | 3.4590 | .. |
| 23 May | 3.4380 | .. |
| 24 May | 3.3470 | .. |
| 28 May | 3.2800 | .. |
| 29 May | 3.4200 | .. |
| 30 May | 3.2220 | .. |
| 31 May | 3.2170 | .. |