| Day | Rate | Set date |
|---|---|---|
| 3 May | 64.4900 | .. |
| 4 May | 65.6900 | .. |
| 5 May | 65.6300 | .. |
| 6 May | 64.7100 | .. |
| 7 May | 64.9000 | .. |
| 10 May | 64.9200 | .. |
| 11 May | 65.2800 | .. |
| 12 May | 66.0800 | .. |
| 13 May | 63.8200 | .. |
| 14 May | 65.3700 | .. |
| 17 May | 66.2700 | .. |
| 18 May | 65.4900 | .. |
| 19 May | 63.3600 | .. |
| 20 May | 62.0500 | .. |
| 21 May | 63.5800 | .. |
| 24 May | 66.0500 | .. |
| 25 May | 66.0700 | .. |
| 26 May | 66.2100 | .. |
| 27 May | 66.8500 | .. |
| 28 May | 66.3200 | .. |
| 30 May | 66.5900 | .. |
| 31 May | 66.9600 | .. |