| 2011-04-07 | 18.47 | 18.40 | 442300 |
| 2011-04-06 | 18.65 | 18.39 | 849600 |
| 2011-04-05 | 18.60 | 18.60 | 303500 |
| 2011-04-04 | 18.84 | 18.69 | 479800 |
| 2011-04-01 | 18.75 | 18.77 | 966500 |
| 2011-03-31 | 17.82 | 18.67 | 814600 |
| 2011-03-30 | 17.54 | 17.82 | 134700 |
| 2011-03-29 | 17.11 | 17.50 | 129800 |
| 2011-03-28 | 17.60 | 17.14 | 101500 |
| 2011-03-25 | 17.42 | 17.55 | 121500 |
| 2011-03-24 | 17.23 | 17.32 | 195000 |
| 2011-03-23 | 16.62 | 17.19 | 610000 |
| 2011-03-22 | 17.54 | 16.65 | 347300 |
| 2011-03-21 | 17.40 | 17.49 | 161100 |
| 2011-03-18 | 17.25 | 17.26 | 608700 |
| 2011-03-17 | 17.52 | 17.14 | 152800 |
| 2011-03-16 | 17.17 | 17.24 | 245100 |
| 2011-03-15 | 17.01 | 17.23 | 168900 |
| 2011-03-14 | 17.71 | 17.43 | 121400 |
| 2011-03-11 | 17.95 | 17.90 | 148500 |
| 2011-03-10 | 17.98 | 17.96 | 241900 |
| 2011-03-09 | 18.17 | 18.21 | 81100 |
| 2011-03-08 | 18.05 | 18.17 | 150000 |
| 2011-03-07 | 18.83 | 18.24 | 190100 |
| 2011-03-04 | 18.97 | 18.74 | 104300 |
| 2011-03-03 | 18.79 | 18.99 | 152300 |
| 2011-03-02 | 18.66 | 18.57 | 191100 |
| 2011-03-01 | 19.00 | 18.73 | 218100 |
| 2011-02-28 | 19.00 | 18.89 | 230800 |
| 2011-02-25 | 18.55 | 18.83 | 467800 |
| 2011-02-24 | 17.88 | 18.56 | 617800 |
| 2011-02-23 | 18.35 | 17.94 | 187300 |
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