| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 3 Jun 1981 | USD | 18.5 | 18.625 | 18.375 | 18.5 | 18.5 | -0.125 (-0.67%) | 39,200 |
| 2 Jun 1981 | USD | 18.625 | 18.625 | 18.375 | 18.625 | 18.625 | +0.25 (+1.36%) | 42,800 |
| 1 Jun 1981 | USD | 18.375 | 18.5 | 18.25 | 18.375 | 18.375 | +0.375 (+2.08%) | 83,300 |
| 29 May 1981 | USD | 18 | 18.125 | 17.875 | 18 | 18 | +0.125 (+0.70%) | 17,000 |
| 28 May 1981 | USD | 17.875 | 18 | 17.875 | 17.875 | 17.875 | 0.0 (0.0%) | 72,200 |
| 27 May 1981 | USD | 17.875 | 18.125 | 17.75 | 17.875 | 17.875 | -0.25 (-1.38%) | 36,800 |
| 26 May 1981 | USD | 18.125 | 18.25 | 18.125 | 18.125 | 18.125 | -0.125 (-0.68%) | 23,600 |
| 25 May 1981 | USD | 18.25 | 18.25 | 18.25 | 18.25 | 18.25 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 18.25 | 18.625 | 18.125 | 18.25 | 18.25 | -0.25 (-1.35%) | 53,700 |
| 21 May 1981 | USD | 18.5 | 18.625 | 18.375 | 18.5 | 18.5 | +0.25 (+1.37%) | 141,000 |
| 20 May 1981 | USD | 18.25 | 18.375 | 18.125 | 18.25 | 18.25 | 0.0 (0.0%) | 57,300 |
| 19 May 1981 | USD | 18.25 | 18.625 | 18.25 | 18.25 | 18.25 | -0.125 (-0.68%) | 129,800 |
| 18 May 1981 | USD | 18.375 | 18.625 | 18.25 | 18.375 | 18.375 | +0.375 (+2.08%) | 135,400 |
| 15 May 1981 | USD | 18 | 18.25 | 18 | 18 | 18 | 0.0 (0.0%) | 115,700 |
| 14 May 1981 | USD | 18 | 18.125 | 17.625 | 18 | 18 | +0.25 (+1.41%) | 45,300 |
| 13 May 1981 | USD | 17.75 | 17.75 | 17.5 | 17.75 | 17.75 | +0.5 (+2.90%) | 385,200 |
| 12 May 1981 | USD | 17.25 | 17.25 | 16.875 | 17.25 | 17.25 | +0.25 (+1.47%) | 277,100 |
| 11 May 1981 | USD | 17 | 17.125 | 16.75 | 17 | 17 | -0.125 (-0.73%) | 32,100 |
| 8 May 1981 | USD | 17.125 | 17.25 | 16.75 | 17.125 | 17.125 | +0.375 (+2.24%) | 55,600 |
| 7 May 1981 | USD | 16.75 | 16.75 | 16.625 | 16.75 | 16.75 | +0.125 (+0.75%) | 20,300 |
| 6 May 1981 | USD | 16.625 | 17 | 16.625 | 16.625 | 16.625 | -0.125 (-0.75%) | 100,100 |
| 5 May 1981 | USD | 16.75 | 17 | 16.625 | 16.75 | 16.75 | -0.25 (-1.47%) | 134,400 |
| 4 May 1981 | USD | 17 | 17.125 | 17 | 17 | 17 | -0.125 (-0.73%) | 120,500 |
| 1 May 1981 | USD | 17.125 | 17.5 | 17.125 | 17.125 | 17.125 | -0.125 (-0.72%) | 13,900 |
| 30 Apr 1981 | USD | 17.25 | 17.5 | 17.25 | 17.25 | 17.25 | -0.125 (-0.72%) | 35,800 |
| 29 Apr 1981 | USD | 17.375 | 17.75 | 17.375 | 17.375 | 17.375 | -0.375 (-2.11%) | 30,600 |
| 28 Apr 1981 | USD | 17.75 | 17.875 | 17.75 | 17.75 | 17.75 | 0.0 (0.0%) | 20,400 |
| 27 Apr 1981 | USD | 17.75 | 18 | 17.75 | 17.75 | 17.75 | -0.25 (-1.39%) | 34,400 |
| 24 Apr 1981 | USD | 18 | 18.875 | 17.875 | 18 | 18 | +0.125 (+0.70%) | 46,600 |
| 23 Apr 1981 | USD | 17.875 | 18.125 | 17.75 | 17.875 | 17.875 | 0.0 (0.0%) | 63,800 |
