| 2011-02-14 | 25.04 | 25.25 | 18000 |
| 2011-02-11 | 25.10 | 25.03 | 14500 |
| 2011-02-10 | 25.05 | 25.13 | 7400 |
| 2011-02-09 | 25.03 | 25.11 | 22000 |
| 2011-02-08 | 25.01 | 25.00 | 11500 |
| 2011-02-07 | 25.00 | 25.13 | 23300 |
| 2011-02-04 | 25.15 | 25.05 | 13000 |
| 2011-02-03 | 25.24 | 25.02 | 34100 |
| 2011-02-02 | 25.16 | 25.19 | 14400 |
| 2011-02-01 | 25.13 | 25.25 | 8100 |
| 2011-01-31 | 25.11 | 25.17 | 16300 |
| 2011-01-28 | 25.18 | 25.26 | 16400 |
| 2011-01-27 | 25.25 | 25.29 | 11400 |
| 2011-01-26 | 25.23 | 25.36 | 10300 |
| 2011-01-25 | 25.39 | 25.40 | 10900 |
| 2011-01-24 | 25.59 | 25.29 | 19100 |
| 2011-01-21 | 25.01 | 25.52 | 27300 |
| 2011-01-20 | 24.82 | 25.21 | 13800 |
| 2011-01-19 | 24.87 | 24.91 | 14600 |
| 2011-01-18 | 24.83 | 24.91 | 24900 |
| 2011-01-14 | 24.80 | 25.03 | 24100 |
| 2011-01-13 | 24.66 | 24.80 | 18600 |
| 2011-01-12 | 24.84 | 24.80 | 33000 |
| 2011-01-11 | 24.80 | 24.84 | 15400 |
| 2011-01-10 | 24.95 | 24.86 | 25000 |
| 2011-01-07 | 25.00 | 24.91 | 12800 |
| 2011-01-06 | 24.96 | 24.97 | 12100 |
| 2011-01-05 | 25.03 | 24.99 | 13500 |
| 2011-01-04 | 24.98 | 25.03 | 15600 |
| 2011-01-03 | 25.03 | 24.96 | 27600 |
| 2010-12-31 | 24.96 | 25.08 | 25700 |
| 2010-12-30 | 25.40 | 24.94 | 94100 |
|
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