| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 27 May 1981 | USD | 33.624 | 33.624 | 33.251 | 33.624 | 11.208 | +0.124 (+0.37%) | 14,201 |
| 26 May 1981 | USD | 33.5 | 33.5 | 33.251 | 33.5 | 11.1667 | +0.125 (+0.37%) | 15,701 |
| 25 May 1981 | USD | 33.375 | 33.375 | 33.375 | 33.375 | 11.125 | 0.0 (0.0%) | 0 |
| 22 May 1981 | USD | 33.375 | 33.5 | 32.752 | 33.375 | 11.125 | -0.627 (-1.84%) | 12,901 |
| 21 May 1981 | USD | 34.002 | 34.376 | 33.748 | 34.002 | 11.334 | 0.0 (0.0%) | 12,801 |
| 20 May 1981 | USD | 34.002 | 34.498 | 34.002 | 34.002 | 11.334 | -0.496 (-1.44%) | 65,301 |
| 19 May 1981 | USD | 34.498 | 34.498 | 34.498 | 34.498 | 11.4993 | +0.122 (+0.35%) | 15,001 |
| 18 May 1981 | USD | 34.376 | 34.626 | 34.127 | 34.376 | 11.4587 | -0.375 (-1.08%) | 176,300 |
| 15 May 1981 | USD | 34.751 | 35.001 | 34.751 | 34.751 | 11.5837 | +0.253 (+0.73%) | 60,100 |
| 14 May 1981 | USD | 34.498 | 34.751 | 34.498 | 34.498 | 11.4993 | 0.0 (0.0%) | 2,700 |
| 13 May 1981 | USD | 34.498 | 34.498 | 34.498 | 34.498 | 11.4993 | 0.0 (0.0%) | 58,000 |
| 12 May 1981 | USD | 34.498 | 34.751 | 34.376 | 34.498 | 11.4993 | +0.122 (+0.35%) | 8,701 |
| 11 May 1981 | USD | 34.376 | 34.876 | 34.376 | 34.376 | 11.4587 | -0.5 (-1.43%) | 22,801 |
| 8 May 1981 | USD | 34.876 | 35.001 | 34.248 | 34.876 | 11.6253 | +0.378 (+1.10%) | 9,400 |
| 7 May 1981 | USD | 34.498 | 34.498 | 34.248 | 34.498 | 11.4993 | +0.25 (+0.73%) | 20,200 |
| 6 May 1981 | USD | 34.248 | 34.751 | 34.248 | 34.248 | 11.416 | 0.0 (0.0%) | 5,201 |
| 5 May 1981 | USD | 34.248 | 34.376 | 34.002 | 34.248 | 11.416 | 0.0 (0.0%) | 17,401 |
| 4 May 1981 | USD | 34.248 | 34.751 | 34.248 | 34.248 | 11.416 | -0.753 (-2.15%) | 17,000 |
| 1 May 1981 | USD | 35.001 | 35.248 | 34.751 | 35.001 | 11.667 | -0.375 (-1.06%) | 22,700 |
| 30 Apr 1981 | USD | 35.376 | 35.501 | 35.001 | 35.376 | 11.792 | +0.375 (+1.07%) | 18,700 |
| 29 Apr 1981 | USD | 35.001 | 35.876 | 35.001 | 35.001 | 11.667 | -0.875 (-2.44%) | 44,201 |
| 28 Apr 1981 | USD | 35.876 | 37.25 | 35.876 | 35.876 | 11.9587 | -0.999 (-2.71%) | 86,401 |
| 27 Apr 1981 | USD | 36.875 | 37.5 | 36.875 | 36.875 | 12.2917 | -0.25 (-0.67%) | 15,900 |
| 24 Apr 1981 | USD | 37.125 | 37.375 | 36.5 | 37.125 | 12.375 | +0.625 (+1.71%) | 44,600 |
| 23 Apr 1981 | USD | 36.5 | 36.75 | 36.375 | 36.5 | 12.1667 | +0.125 (+0.34%) | 33,001 |
| 22 Apr 1981 | USD | 36.375 | 36.375 | 36.001 | 36.375 | 12.125 | +0.374 (+1.04%) | 16,301 |
| 21 Apr 1981 | USD | 36.001 | 36.25 | 36.001 | 36.001 | 12.0003 | 0.0 (0.0%) | 15,600 |
| 20 Apr 1981 | USD | 36.001 | 36.25 | 35.751 | 36.001 | 12.0003 | 0.0 (0.0%) | 49,801 |
| 17 Apr 1981 | USD | 36.001 | 36.001 | 36.001 | 36.001 | 12.0003 | 0.0 (0.0%) | 0 |
| 16 Apr 1981 | USD | 36.001 | 36.75 | 35.751 | 36.001 | 12.0003 | -0.499 (-1.37%) | 45,201 |
