| 2011-02-14 | 22.12 | 22.12 | 28500 |
| 2011-02-11 | 21.86 | 22.07 | 43800 |
| 2011-02-10 | 22.02 | 22.00 | 55600 |
| 2011-02-09 | 22.22 | 22.31 | 44200 |
| 2011-02-08 | 22.28 | 22.36 | 64600 |
| 2011-02-07 | 22.20 | 22.38 | 36700 |
| 2011-02-04 | 22.10 | 22.11 | 25100 |
| 2011-02-03 | 22.09 | 22.06 | 19400 |
| 2011-02-02 | 22.20 | 22.06 | 12900 |
| 2011-02-01 | 22.23 | 22.33 | 187700 |
| 2011-01-31 | 21.91 | 21.96 | 44300 |
| 2011-01-28 | 22.48 | 21.80 | 43700 |
| 2011-01-27 | 22.55 | 22.44 | 63500 |
| 2011-01-26 | 22.50 | 22.50 | 27000 |
| 2011-01-25 | 22.21 | 22.49 | 25700 |
| 2011-01-24 | 22.08 | 22.35 | 25700 |
| 2011-01-21 | 22.14 | 22.01 | 29300 |
| 2011-01-20 | 21.64 | 22.00 | 30500 |
| 2011-01-19 | 21.93 | 21.76 | 30400 |
| 2011-01-18 | 22.01 | 22.01 | 16900 |
| 2011-01-14 | 22.12 | 21.98 | 18200 |
| 2011-01-13 | 22.01 | 22.09 | 21300 |
| 2011-01-12 | 21.98 | 21.98 | 25500 |
| 2011-01-11 | 22.03 | 21.79 | 22600 |
| 2011-01-10 | 22.04 | 21.92 | 33200 |
| 2011-01-07 | 22.44 | 22.19 | 17200 |
| 2011-01-06 | 22.56 | 22.44 | 30100 |
| 2011-01-05 | 22.59 | 22.59 | 23700 |
| 2011-01-04 | 22.58 | 22.57 | 77900 |
| 2011-01-03 | 22.06 | 22.58 | 39600 |
| 2010-12-31 | 21.66 | 21.78 | 20700 |
| 2010-12-30 | 21.72 | 21.77 | 20500 |
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