| 2011-02-14 | 21.14 | 21.23 | 60400 |
| 2011-02-11 | 20.89 | 21.20 | 51900 |
| 2011-02-10 | 20.88 | 20.99 | 90200 |
| 2011-02-09 | 21.34 | 21.04 | 64000 |
| 2011-02-08 | 21.35 | 21.44 | 31400 |
| 2011-02-07 | 21.23 | 21.40 | 115400 |
| 2011-02-04 | 21.33 | 21.25 | 53200 |
| 2011-02-03 | 21.39 | 21.32 | 46400 |
| 2011-02-02 | 21.15 | 21.36 | 160300 |
| 2011-02-01 | 20.86 | 21.23 | 198000 |
| 2011-01-31 | 20.75 | 20.75 | 96500 |
| 2011-01-28 | 21.10 | 20.69 | 182800 |
| 2011-01-27 | 20.92 | 21.08 | 243100 |
| 2011-01-26 | 20.45 | 20.89 | 240000 |
| 2011-01-25 | 20.23 | 20.42 | 100600 |
| 2011-01-24 | 20.33 | 20.34 | 138700 |
| 2011-01-21 | 20.33 | 20.33 | 169100 |
| 2011-01-20 | 20.50 | 20.28 | 249800 |
| 2011-01-19 | 20.92 | 20.60 | 90400 |
| 2011-01-18 | 21.14 | 20.93 | 135900 |
| 2011-01-14 | 20.81 | 21.22 | 233700 |
| 2011-01-13 | 20.76 | 20.80 | 89900 |
| 2011-01-12 | 20.75 | 20.80 | 115900 |
| 2011-01-11 | 20.52 | 20.61 | 130900 |
| 2011-01-10 | 20.27 | 20.45 | 266800 |
| 2011-01-07 | 20.35 | 20.36 | 216600 |
| 2011-01-06 | 20.38 | 20.35 | 203500 |
| 2011-01-05 | 20.42 | 20.44 | 222200 |
| 2011-01-04 | 20.70 | 20.46 | 242800 |
| 2011-01-03 | 20.94 | 20.72 | 235800 |
| 2010-12-31 | 21.20 | 20.76 | 124400 |
| 2010-12-30 | 21.18 | 21.20 | 59700 |
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