| Day | Rate | Set date |
|---|---|---|
| 1 May | 66.4600 | .. |
| 4 May | 66.4500 | .. |
| 5 May | 67.5200 | .. |
| 6 May | 67.7700 | .. |
| 7 May | 65.5400 | .. |
| 8 May | 65.3900 | .. |
| 11 May | 64.9100 | .. |
| 12 May | 66.8600 | .. |
| 13 May | 66.8100 | .. |
| 14 May | 66.5900 | .. |
| 15 May | 66.8100 | .. |
| 18 May | 66.2700 | .. |
| 19 May | 64.0200 | .. |
| 20 May | 65.0300 | .. |
| 21 May | 66.5400 | .. |
| 22 May | 65.3700 | .. |
| 25 May | 65.5200 | .. |
| 26 May | 63.7200 | .. |
| 27 May | 62.0600 | .. |
| 28 May | 62.5800 | .. |
| 29 May | 65.5600 | .. |