| Day | Rate | Set date |
|---|---|---|
| 1 May | 126.9000 | 30.04.1999 |
| 2 May | 126.9000 | 30.04.1999 |
| 3 May | 126.9300 | 03.05.1999 |
| 4 May | 128.0400 | 04.05.1999 |
| 5 May | 128.7800 | 05.05.1999 |
| 6 May | 130.6000 | 06.05.1999 |
| 7 May | 130.1300 | 07.05.1999 |
| 8 May | 130.1300 | 07.05.1999 |
| 9 May | 130.1300 | 07.05.1999 |
| 10 May | 129.8200 | 10.05.1999 |
| 11 May | 129.9700 | 11.05.1999 |
| 12 May | 128.8800 | 12.05.1999 |
| 13 May | 129.2000 | 13.05.1999 |
| 14 May | 130.7800 | 14.05.1999 |
| 15 May | 130.7800 | 14.05.1999 |
| 16 May | 130.7800 | 14.05.1999 |
| 17 May | 131.4700 | 17.05.1999 |
| 18 May | 131.6200 | 18.05.1999 |
| 19 May | 132.4000 | 19.05.1999 |
| 20 May | 132.1600 | 20.05.1999 |
| 21 May | 131.2500 | 21.05.1999 |
| 22 May | 131.2500 | 21.05.1999 |
| 23 May | 131.2500 | 21.05.1999 |
| 24 May | 130.8600 | 24.05.1999 |
| 25 May | 130.4100 | 25.05.1999 |
| 26 May | 128.7700 | 26.05.1999 |
| 27 May | 128.0500 | 27.05.1999 |
| 28 May | 126.7000 | 28.05.1999 |
| 29 May | 126.7000 | 28.05.1999 |
| 30 May | 126.7000 | 28.05.1999 |
| 31 May | 127.1800 | 31.05.1999 |