| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 28 May 1981 | USD | 27.501 | 28.251 | 27.501 | 27.501 | 2.2918 | -0.624 (-2.22%) | 9,300 |
| 27 May 1981 | USD | 28.125 | 28.627 | 28.125 | 28.125 | 2.3438 | -0.251 (-0.88%) | 7,701 |
| 26 May 1981 | USD | 28.376 | 29 | 28.376 | 28.376 | 2.3647 | 0.0 (0.0%) | 11,500 |
| 25 May 1981 | USD | 28.376 | 28.376 | 28.376 | 28.376 | 2.3647 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 28.376 | 29 | 28.376 | 28.376 | 2.3647 | -0.624 (-2.15%) | 4,000 |
| 21 May 1981 | USD | 29 | 29.501 | 29 | 29 | 2.4167 | -0.376 (-1.28%) | 5,601 |
| 20 May 1981 | USD | 29.376 | 29.376 | 28.627 | 29.376 | 2.448 | +0.875 (+3.07%) | 7,500 |
| 19 May 1981 | USD | 28.501 | 28.501 | 28.251 | 28.501 | 2.3751 | +0.376 (+1.34%) | 7,701 |
| 18 May 1981 | USD | 28.125 | 28.125 | 27.875 | 28.125 | 2.3438 | +0.373 (+1.34%) | 7,900 |
| 15 May 1981 | USD | 27.752 | 27.875 | 27.376 | 27.752 | 2.3127 | +0.251 (+0.91%) | 4,500 |
| 14 May 1981 | USD | 27.501 | 27.627 | 27.376 | 27.501 | 2.2918 | +0.125 (+0.46%) | 5,800 |
| 13 May 1981 | USD | 27.376 | 27.752 | 27.376 | 27.376 | 2.2813 | -0.251 (-0.91%) | 5,301 |
| 12 May 1981 | USD | 27.627 | 27.627 | 27.125 | 27.627 | 2.3023 | +0.126 (+0.46%) | 3,900 |
| 11 May 1981 | USD | 27.501 | 27.627 | 26.752 | 27.501 | 2.2918 | +0.501 (+1.86%) | 17,601 |
| 8 May 1981 | USD | 27 | 27.376 | 27 | 27 | 2.25 | -0.376 (-1.37%) | 4,500 |
| 7 May 1981 | USD | 27.376 | 27.501 | 26.627 | 27.376 | 2.2813 | +0.624 (+2.33%) | 9,801 |
| 6 May 1981 | USD | 26.752 | 26.875 | 26.501 | 26.752 | 2.2293 | +0.501 (+1.91%) | 7,401 |
| 5 May 1981 | USD | 26.251 | 26.376 | 26 | 26.251 | 2.1876 | -0.125 (-0.47%) | 11,100 |
| 4 May 1981 | USD | 26.376 | 26.752 | 26.251 | 26.376 | 2.198 | -0.749 (-2.76%) | 12,100 |
| 1 May 1981 | USD | 27.125 | 27.875 | 27.125 | 27.125 | 2.2604 | -0.502 (-1.82%) | 8,700 |
| 30 Apr 1981 | USD | 27.627 | 27.752 | 27.376 | 27.627 | 2.3023 | +0.627 (+2.32%) | 7,900 |
| 29 Apr 1981 | USD | 27 | 27.251 | 26.752 | 27 | 2.25 | 0.0 (0.0%) | 9,900 |
| 28 Apr 1981 | USD | 27 | 27.627 | 27 | 27 | 2.25 | -0.376 (-1.37%) | 17,001 |
| 27 Apr 1981 | USD | 27.376 | 28.251 | 27.376 | 27.376 | 2.2813 | -0.251 (-0.91%) | 18,600 |
| 24 Apr 1981 | USD | 27.627 | 27.627 | 26.752 | 27.627 | 2.3023 | +0.627 (+2.32%) | 13,900 |
| 23 Apr 1981 | USD | 27 | 27.752 | 26.501 | 27 | 2.25 | +1.125 (+4.35%) | 48,801 |
| 22 Apr 1981 | USD | 25.875 | 25.875 | 24.251 | 25.875 | 2.1563 | +1.123 (+4.54%) | 28,900 |
| 21 Apr 1981 | USD | 24.752 | 26 | 24.627 | 24.752 | 2.0627 | -1.248 (-4.80%) | 10,200 |
| 20 Apr 1981 | USD | 26 | 26.376 | 25.752 | 26 | 2.1667 | -0.376 (-1.43%) | 9,201 |
| 17 Apr 1981 | USD | 26.376 | 26.376 | 26.376 | 26.376 | 2.198 | 0.0 (0.0%) | 0 |
