| 2011-02-14 | 22.37 | 22.37 | 45800 |
| 2011-02-11 | 21.89 | 22.30 | 135500 |
| 2011-02-10 | 21.95 | 22.07 | 120500 |
| 2011-02-09 | 22.47 | 22.29 | 339700 |
| 2011-02-08 | 22.54 | 22.55 | 96200 |
| 2011-02-07 | 22.47 | 22.51 | 174200 |
| 2011-02-04 | 22.43 | 22.37 | 626200 |
| 2011-02-03 | 22.31 | 22.47 | 137200 |
| 2011-02-02 | 22.59 | 22.36 | 289900 |
| 2011-02-01 | 22.64 | 22.81 | 252300 |
| 2011-01-31 | 22.17 | 22.10 | 937600 |
| 2011-01-28 | 22.57 | 22.13 | 771400 |
| 2011-01-27 | 22.85 | 22.63 | 114600 |
| 2011-01-26 | 22.91 | 22.93 | 309200 |
| 2011-01-25 | 23.21 | 22.94 | 204300 |
| 2011-01-24 | 23.13 | 23.17 | 216100 |
| 2011-01-21 | 23.28 | 23.39 | 263000 |
| 2011-01-20 | 23.49 | 23.16 | 292000 |
| 2011-01-19 | 23.77 | 23.52 | 215800 |
| 2011-01-18 | 24.11 | 23.82 | 279700 |
| 2011-01-14 | 24.12 | 24.11 | 151600 |
| 2011-01-13 | 24.21 | 24.15 | 152800 |
| 2011-01-12 | 23.81 | 24.11 | 395800 |
| 2011-01-11 | 23.75 | 23.70 | 138000 |
| 2011-01-10 | 24.00 | 23.70 | 115900 |
| 2011-01-07 | 24.13 | 24.02 | 56200 |
| 2011-01-06 | 24.16 | 24.12 | 482400 |
| 2011-01-05 | 24.04 | 24.10 | 113900 |
| 2011-01-04 | 24.53 | 24.08 | 138100 |
| 2011-01-03 | 24.82 | 24.54 | 188800 |
| 2010-12-31 | 24.33 | 24.44 | 83600 |
| 2010-12-30 | 24.34 | 24.30 | 79200 |
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