| Day | Rate | Set date |
|---|---|---|
| 1 May | 73.1300 | .. |
| 2 May | 73.3600 | .. |
| 3 May | 73.6200 | .. |
| 4 May | 74.8700 | .. |
| 7 May | 76.1700 | .. |
| 8 May | 74.8500 | .. |
| 9 May | 77.2100 | .. |
| 10 May | 77.4700 | .. |
| 11 May | 77.1200 | .. |
| 14 May | 78.2300 | .. |
| 15 May | 78.4300 | .. |
| 16 May | 79.2800 | .. |
| 17 May | 79.3000 | .. |
| 18 May | 78.5100 | .. |
| 21 May | 79.2200 | .. |
| 22 May | 79.5700 | .. |
| 23 May | 79.8000 | .. |
| 24 May | 78.7900 | .. |
| 25 May | 76.4400 | .. |
| 28 May | 75.3000 | .. |
| 29 May | 75.3900 | .. |
| 30 May | 77.5000 | .. |
| 31 May | 77.5900 | .. |