| 2011-04-07 | 18.92 | 18.66 | 119800 |
| 2011-04-06 | 19.80 | 18.81 | 163600 |
| 2011-04-05 | 19.33 | 19.65 | 255900 |
| 2011-04-04 | 18.94 | 19.26 | 356200 |
| 2011-04-01 | 17.81 | 18.80 | 511400 |
| 2011-03-31 | 17.62 | 17.86 | 132100 |
| 2011-03-30 | 16.95 | 17.65 | 81900 |
| 2011-03-29 | 16.68 | 16.84 | 45700 |
| 2011-03-28 | 16.47 | 16.73 | 32500 |
| 2011-03-25 | 16.29 | 16.40 | 64800 |
| 2011-03-24 | 16.32 | 16.20 | 33100 |
| 2011-03-23 | 16.01 | 16.20 | 55100 |
| 2011-03-22 | 16.23 | 16.09 | 27800 |
| 2011-03-21 | 15.79 | 16.22 | 103700 |
| 2011-03-18 | 15.32 | 15.62 | 109200 |
| 2011-03-17 | 15.29 | 15.18 | 39700 |
| 2011-03-16 | 15.16 | 14.96 | 62100 |
| 2011-03-15 | 14.98 | 15.20 | 66900 |
| 2011-03-14 | 15.18 | 15.34 | 38400 |
| 2011-03-11 | 15.25 | 15.40 | 40000 |
| 2011-03-10 | 15.58 | 15.31 | 66400 |
| 2011-03-09 | 15.82 | 15.82 | 45200 |
| 2011-03-08 | 15.82 | 15.79 | 103200 |
| 2011-03-07 | 15.81 | 15.81 | 95400 |
| 2011-03-04 | 15.79 | 15.77 | 51800 |
| 2011-03-03 | 15.71 | 15.81 | 66900 |
| 2011-03-02 | 16.03 | 15.57 | 68300 |
| 2011-03-01 | 16.10 | 16.06 | 200500 |
| 2011-02-28 | 16.22 | 16.07 | 121500 |
| 2011-02-25 | 15.32 | 16.09 | 114100 |
| 2011-02-24 | 14.80 | 15.28 | 96800 |
| 2011-02-23 | 15.21 | 14.80 | 83000 |
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