| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 4 Jun 1981 | USD | 17.5 | 17.875 | 17.5 | 17.5 | 0.8424 | +0.375 (+2.19%) | 4,600 |
| 3 Jun 1981 | USD | 17.125 | 17.125 | 16.75 | 17.125 | 0.8244 | +0.125 (+0.74%) | 4,000 |
| 2 Jun 1981 | USD | 17 | 17.875 | 17 | 17 | 0.8184 | -0.875 (-4.90%) | 6,700 |
| 1 Jun 1981 | USD | 17.875 | 18.25 | 17.875 | 17.875 | 0.8605 | -0.125 (-0.69%) | 7,400 |
| 29 May 1981 | USD | 18 | 18.5 | 18 | 18 | 0.8665 | 0.0 (0.0%) | 18,000 |
| 28 May 1981 | USD | 18 | 18.25 | 18 | 18 | 0.8665 | -0.25 (-1.37%) | 15,100 |
| 27 May 1981 | USD | 18.25 | 18.25 | 17.625 | 18.25 | 0.8786 | +0.375 (+2.10%) | 13,700 |
| 26 May 1981 | USD | 17.875 | 18.125 | 17.25 | 17.875 | 0.8605 | -0.25 (-1.38%) | 17,300 |
| 25 May 1981 | USD | 18.125 | 18.125 | 18.125 | 18.125 | 0.8725 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 18.125 | 18.375 | 17.75 | 18.125 | 0.8725 | +0.375 (+2.11%) | 14,000 |
| 21 May 1981 | USD | 17.75 | 18.375 | 17.625 | 17.75 | 0.8545 | -0.75 (-4.05%) | 13,300 |
| 20 May 1981 | USD | 18.5 | 18.875 | 18.5 | 18.5 | 0.8906 | 0.0 (0.0%) | 10,300 |
| 19 May 1981 | USD | 18.5 | 18.75 | 18.25 | 18.5 | 0.8906 | 0.0 (0.0%) | 35,200 |
| 18 May 1981 | USD | 18.5 | 18.75 | 18.125 | 18.5 | 0.8906 | 0.0 (0.0%) | 37,100 |
| 15 May 1981 | USD | 18.5 | 18.5 | 17.125 | 18.5 | 0.8906 | +1.375 (+8.03%) | 58,700 |
| 14 May 1981 | USD | 17.125 | 17.5 | 16.5 | 17.125 | 0.8244 | +0.625 (+3.79%) | 24,900 |
| 13 May 1981 | USD | 16.5 | 16.625 | 15.75 | 16.5 | 0.7943 | +0.75 (+4.76%) | 16,600 |
| 12 May 1981 | USD | 15.75 | 15.75 | 15.5 | 15.75 | 0.7582 | 0.0 (0.0%) | 6,900 |
| 11 May 1981 | USD | 15.75 | 16.375 | 15.75 | 15.75 | 0.7582 | -0.625 (-3.82%) | 4,300 |
| 8 May 1981 | USD | 16.375 | 16.375 | 15.875 | 16.375 | 0.7883 | +0.5 (+3.15%) | 10,000 |
| 7 May 1981 | USD | 15.875 | 16 | 15.125 | 15.875 | 0.7642 | +0.375 (+2.42%) | 12,000 |
| 6 May 1981 | USD | 15.5 | 16 | 15.5 | 15.5 | 0.7462 | -0.125 (-0.80%) | 11,200 |
| 5 May 1981 | USD | 15.625 | 15.625 | 15.25 | 15.625 | 0.7522 | 0.0 (0.0%) | 3,900 |
| 4 May 1981 | USD | 15.625 | 15.875 | 15 | 15.625 | 0.7522 | -0.125 (-0.79%) | 5,600 |
| 1 May 1981 | USD | 15.75 | 15.75 | 15.75 | 15.75 | 0.7582 | 0.0 (0.0%) | 1,700 |
| 30 Apr 1981 | USD | 15.75 | 15.875 | 15.75 | 15.75 | 0.7582 | -0.125 (-0.79%) | 5,200 |
| 29 Apr 1981 | USD | 15.875 | 16.625 | 15.875 | 15.875 | 0.7642 | -1.125 (-6.62%) | 13,700 |
| 28 Apr 1981 | USD | 17 | 17.125 | 16.75 | 17 | 0.8184 | -0.125 (-0.73%) | 5,700 |
| 27 Apr 1981 | USD | 17.125 | 17.125 | 16.75 | 17.125 | 0.8244 | +0.125 (+0.74%) | 19,200 |
| 24 Apr 1981 | USD | 17 | 17.25 | 16.125 | 17 | 0.8184 | +0.75 (+4.62%) | 33,100 |
