| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 28 May 1981 | USD | 12.495 | 12.748 | 12.003 | 12.495 | 0.66 | +0.243 (+1.98%) | 5,300 |
| 27 May 1981 | USD | 12.252 | 12.748 | 11.876 | 12.252 | 0.6471 | +0.752 (+6.54%) | 14,401 |
| 26 May 1981 | USD | 11.5 | 11.5 | 10.5 | 11.5 | 0.6074 | +1.499 (+14.99%) | 11,200 |
| 25 May 1981 | USD | 10.001 | 10.001 | 10.001 | 10.001 | 0.5282 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 10.001 | 10.377 | 9.878 | 10.001 | 0.5282 | -0.246 (-2.40%) | 6,500 |
| 21 May 1981 | USD | 10.247 | 10.873 | 10.247 | 10.247 | 0.5412 | -0.377 (-3.55%) | 7,000 |
| 20 May 1981 | USD | 10.624 | 10.75 | 10.624 | 10.624 | 0.5611 | -0.126 (-1.17%) | 33,000 |
| 19 May 1981 | USD | 10.75 | 10.75 | 10.247 | 10.75 | 0.5678 | +0.749 (+7.49%) | 19,000 |
| 18 May 1981 | USD | 10.001 | 10.247 | 9.878 | 10.001 | 0.5282 | 0.0 (0.0%) | 6,001 |
| 15 May 1981 | USD | 10.001 | 10.5 | 10.001 | 10.001 | 0.5282 | -0.499 (-4.75%) | 5,101 |
| 14 May 1981 | USD | 10.5 | 10.624 | 10.5 | 10.5 | 0.5546 | -0.25 (-2.33%) | 702 |
| 13 May 1981 | USD | 10.75 | 10.75 | 10.5 | 10.75 | 0.5678 | -0.25 (-2.27%) | 2,600 |
| 12 May 1981 | USD | 11 | 11 | 11 | 11 | 0.581 | 0.0 (0.0%) | 200 |
| 11 May 1981 | USD | 11 | 11.373 | 11 | 11 | 0.581 | 0.0 (0.0%) | 1,800 |
| 8 May 1981 | USD | 11 | 11 | 10.873 | 11 | 0.581 | +0.127 (+1.17%) | 999 |
| 7 May 1981 | USD | 10.873 | 11 | 10.873 | 10.873 | 0.5743 | -0.127 (-1.15%) | 200 |
| 6 May 1981 | USD | 11 | 11 | 10.75 | 11 | 0.581 | +0.25 (+2.33%) | 2,200 |
| 5 May 1981 | USD | 10.75 | 11 | 10.624 | 10.75 | 0.5678 | 0.0 (0.0%) | 1,101 |
| 4 May 1981 | USD | 10.75 | 11.373 | 10.624 | 10.75 | 0.5678 | -1.003 (-8.53%) | 4,402 |
| 1 May 1981 | USD | 11.753 | 12.003 | 11.25 | 11.753 | 0.6208 | 0.0 (0.0%) | 4,101 |
| 30 Apr 1981 | USD | 11.753 | 11.876 | 11.753 | 11.753 | 0.6208 | -0.25 (-2.08%) | 901 |
| 29 Apr 1981 | USD | 12.003 | 12.126 | 12.003 | 12.003 | 0.634 | -0.372 (-3.01%) | 501 |
| 28 Apr 1981 | USD | 12.375 | 12.375 | 12.252 | 12.375 | 0.6536 | +0.123 (+1.00%) | 1,201 |
| 27 Apr 1981 | USD | 12.252 | 12.748 | 12.252 | 12.252 | 0.6471 | +0.249 (+2.07%) | 13,701 |
| 24 Apr 1981 | USD | 12.003 | 12.003 | 11.5 | 12.003 | 0.634 | +0.377 (+3.24%) | 2,702 |
| 23 Apr 1981 | USD | 11.626 | 11.626 | 11.127 | 11.626 | 0.6141 | +0.376 (+3.34%) | 3,501 |
| 22 Apr 1981 | USD | 11.25 | 11.25 | 11 | 11.25 | 0.5942 | +0.123 (+1.11%) | 2,401 |
| 21 Apr 1981 | USD | 11.127 | 11.373 | 11.127 | 11.127 | 0.5877 | +0.127 (+1.15%) | 702 |
| 20 Apr 1981 | USD | 11 | 11 | 10.873 | 11 | 0.581 | +0.25 (+2.33%) | 1,501 |
| 17 Apr 1981 | USD | 10.75 | 10.75 | 10.75 | 10.75 | 0.5678 | 0.0 (0.0%) | 0 |
