| Day | Rate | Set date |
|---|---|---|
| 1 May | 63.6000 | .. |
| 2 May | 61.8100 | .. |
| 3 May | 61.9400 | .. |
| 6 May | 62.2500 | .. |
| 7 May | 61.4000 | .. |
| 8 May | 62.1200 | .. |
| 9 May | 61.7000 | .. |
| 10 May | 61.6600 | .. |
| 13 May | 61.0400 | .. |
| 14 May | 61.7800 | .. |
| 15 May | 62.0200 | .. |
| 16 May | 62.8700 | .. |
| 17 May | 62.7600 | .. |
| 20 May | 63.1000 | .. |
| 21 May | 62.9900 | .. |
| 22 May | 61.4200 | .. |
| 23 May | 57.9100 | .. |
| 24 May | 58.6300 | .. |
| 26 May | 58.7700 | .. |
| 27 May | 59.1600 | .. |
| 28 May | 59.1400 | .. |
| 29 May | 58.8100 | .. |
| 30 May | 56.5900 | .. |
| 31 May | 53.5000 | .. |