| Day | Rate | Set date |
|---|---|---|
| 1 May | 1.6113 | 30.04.1999 |
| 2 May | 1.6113 | 30.04.1999 |
| 3 May | 1.6111 | 03.05.1999 |
| 4 May | 1.6098 | 04.05.1999 |
| 5 May | 1.6041 | 05.05.1999 |
| 6 May | 1.6080 | 06.05.1999 |
| 7 May | 1.6078 | 07.05.1999 |
| 8 May | 1.6078 | 07.05.1999 |
| 9 May | 1.6078 | 07.05.1999 |
| 10 May | 1.6075 | 10.05.1999 |
| 11 May | 1.6082 | 11.05.1999 |
| 12 May | 1.6052 | 12.05.1999 |
| 13 May | 1.6013 | 13.05.1999 |
| 14 May | 1.6020 | 14.05.1999 |
| 15 May | 1.6020 | 14.05.1999 |
| 16 May | 1.6020 | 14.05.1999 |
| 17 May | 1.6023 | 17.05.1999 |
| 18 May | 1.6023 | 18.05.1999 |
| 19 May | 1.6017 | 19.05.1999 |
| 20 May | 1.6020 | 20.05.1999 |
| 21 May | 1.6034 | 21.05.1999 |
| 22 May | 1.6034 | 21.05.1999 |
| 23 May | 1.6034 | 21.05.1999 |
| 24 May | 1.6023 | 24.05.1999 |
| 25 May | 1.5964 | 25.05.1999 |
| 26 May | 1.5949 | 26.05.1999 |
| 27 May | 1.5939 | 27.05.1999 |
| 28 May | 1.5941 | 28.05.1999 |
| 29 May | 1.5941 | 28.05.1999 |
| 30 May | 1.5941 | 28.05.1999 |
| 31 May | 1.5943 | 31.05.1999 |