| Day | Rate | Set date |
|---|---|---|
| 1 May | 3.2150 | .. |
| 2 May | 3.1950 | .. |
| 3 May | 3.2280 | .. |
| 4 May | 3.1860 | .. |
| 5 May | 3.2660 | .. |
| 8 May | 3.1720 | .. |
| 9 May | 3.2270 | .. |
| 10 May | 3.2920 | .. |
| 11 May | 3.3760 | .. |
| 12 May | 3.4240 | .. |
| 15 May | 3.3490 | .. |
| 16 May | 3.2300 | .. |
| 17 May | 3.1920 | .. |
| 18 May | 3.1820 | .. |
| 19 May | 3.2560 | .. |
| 22 May | 3.3300 | .. |
| 23 May | 3.2190 | .. |
| 24 May | 3.2090 | .. |
| 25 May | 3.1840 | .. |
| 26 May | 3.2360 | .. |
| 28 May | 3.2360 | .. |
| 29 May | 3.2010 | .. |
| 30 May | 3.1450 | .. |
| 31 May | 3.0710 | .. |