| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 27 May 1981 | USD | 20.5 | 20.628 | 20.376 | 20.5 | 2.4061 | +0.372 (+1.85%) | 25,000 |
| 26 May 1981 | USD | 20.128 | 20.252 | 19.876 | 20.128 | 2.3624 | +0.128 (+0.64%) | 8,200 |
| 25 May 1981 | USD | 20 | 20 | 20 | 20 | 2.3474 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 20 | 20.252 | 19.876 | 20 | 2.3474 | +0.372 (+1.90%) | 37,200 |
| 21 May 1981 | USD | 19.628 | 20.376 | 19.376 | 19.628 | 2.3038 | -0.624 (-3.08%) | 58,400 |
| 20 May 1981 | USD | 20.252 | 20.628 | 20.128 | 20.252 | 2.377 | -0.5 (-2.41%) | 9,400 |
| 19 May 1981 | USD | 20.752 | 20.876 | 20.628 | 20.752 | 2.4357 | -0.124 (-0.59%) | 18,400 |
| 18 May 1981 | USD | 20.876 | 21.128 | 20.752 | 20.876 | 2.4502 | -0.376 (-1.77%) | 34,500 |
| 15 May 1981 | USD | 21.252 | 21.252 | 20.876 | 21.252 | 2.4944 | +0.124 (+0.59%) | 9,100 |
| 14 May 1981 | USD | 21.128 | 21.5 | 21.128 | 21.128 | 2.4798 | -0.372 (-1.73%) | 13,300 |
| 13 May 1981 | USD | 21.5 | 21.628 | 21.376 | 21.5 | 2.5235 | +0.248 (+1.17%) | 17,900 |
| 12 May 1981 | USD | 21.252 | 21.252 | 20 | 21.252 | 2.4944 | +1 (+4.94%) | 17,900 |
| 11 May 1981 | USD | 20.252 | 21.376 | 20 | 20.252 | 2.377 | -0.876 (-4.15%) | 26,700 |
| 8 May 1981 | USD | 21.128 | 21.628 | 21 | 21.128 | 2.4798 | -0.248 (-1.16%) | 30,200 |
| 7 May 1981 | USD | 21.376 | 21.376 | 21 | 21.376 | 2.5089 | +0.248 (+1.17%) | 27,900 |
| 6 May 1981 | USD | 21.128 | 21.128 | 20.876 | 21.128 | 2.4798 | +0.5 (+2.42%) | 16,300 |
| 5 May 1981 | USD | 20.628 | 20.876 | 20.128 | 20.628 | 2.4211 | +0.252 (+1.24%) | 11,300 |
| 4 May 1981 | USD | 20.376 | 20.628 | 20.128 | 20.376 | 2.3915 | -0.124 (-0.60%) | 28,800 |
| 1 May 1981 | USD | 20.5 | 21.252 | 20.5 | 20.5 | 2.4061 | -0.752 (-3.54%) | 36,800 |
| 30 Apr 1981 | USD | 21.252 | 21.628 | 20.876 | 21.252 | 2.4944 | -0.624 (-2.85%) | 14,900 |
| 29 Apr 1981 | USD | 21.876 | 22.5 | 21.5 | 21.876 | 2.5676 | -0.5 (-2.23%) | 15,800 |
| 28 Apr 1981 | USD | 22.376 | 22.376 | 22 | 22.376 | 2.6263 | 0.0 (0.0%) | 11,000 |
| 27 Apr 1981 | USD | 22.376 | 22.5 | 22.252 | 22.376 | 2.6263 | 0.0 (0.0%) | 22,300 |
| 24 Apr 1981 | USD | 22.376 | 22.876 | 22.376 | 22.376 | 2.6263 | -0.624 (-2.71%) | 18,900 |
| 23 Apr 1981 | USD | 23 | 23.376 | 23 | 23 | 2.6995 | -0.252 (-1.08%) | 22,600 |
| 22 Apr 1981 | USD | 23.252 | 23.376 | 23.252 | 23.252 | 2.7291 | -0.124 (-0.53%) | 48,500 |
| 21 Apr 1981 | USD | 23.376 | 23.752 | 23.376 | 23.376 | 2.7437 | -0.124 (-0.53%) | 12,300 |
| 20 Apr 1981 | USD | 23.5 | 23.628 | 22.752 | 23.5 | 2.7582 | +0.25 (+1.08%) | 19,500 |
| 17 Apr 1981 | USD | 23.25 | 23.25 | 23.25 | 23.25 | 2.7289 | -0.002 (-0.01%) | 0 |
| 16 Apr 1981 | USD | 23.252 | 23.252 | 22.752 | 23.252 | 2.7291 | +0.5 (+2.20%) | 23,900 |
