| 2011-02-14 | 21.84 | 21.83 | 35300 |
| 2011-02-11 | 21.69 | 21.85 | 6900 |
| 2011-02-10 | 21.75 | 21.69 | 53500 |
| 2011-02-09 | 21.81 | 21.76 | 27000 |
| 2011-02-08 | 21.66 | 21.72 | 13600 |
| 2011-02-07 | 21.66 | 21.55 | 6200 |
| 2011-02-04 | 21.53 | 21.65 | 9400 |
| 2011-02-03 | 21.30 | 21.41 | 4700 |
| 2011-02-02 | 21.29 | 21.24 | 47600 |
| 2011-02-01 | 21.18 | 21.27 | 7700 |
| 2011-01-31 | 21.19 | 20.97 | 10000 |
| 2011-01-28 | 21.29 | 20.95 | 15700 |
| 2011-01-27 | 21.37 | 21.29 | 25200 |
| 2011-01-26 | 21.49 | 21.41 | 5700 |
| 2011-01-25 | 21.35 | 21.47 | 6200 |
| 2011-01-24 | 21.51 | 21.37 | 12700 |
| 2011-01-21 | 21.55 | 21.50 | 26300 |
| 2011-01-20 | 21.08 | 21.34 | 14300 |
| 2011-01-19 | 21.33 | 21.25 | 27200 |
| 2011-01-18 | 21.42 | 21.42 | 8300 |
| 2011-01-14 | 21.38 | 21.40 | 9000 |
| 2011-01-13 | 21.38 | 21.41 | 9700 |
| 2011-01-12 | 21.24 | 21.24 | 5500 |
| 2011-01-11 | 21.20 | 21.14 | 24600 |
| 2011-01-10 | 20.92 | 21.07 | 37400 |
| 2011-01-07 | 20.94 | 20.93 | 11300 |
| 2011-01-06 | 21.06 | 20.94 | 15900 |
| 2011-01-05 | 20.93 | 20.92 | 16700 |
| 2011-01-04 | 21.16 | 20.88 | 16800 |
| 2011-01-03 | 21.26 | 21.07 | 29000 |
| 2010-12-31 | 21.07 | 21.10 | 5300 |
| 2010-12-30 | 21.09 | 21.07 | 4400 |
|
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