| 2011-02-14 | 22.79 | 22.54 | 135900 |
| 2011-02-11 | 21.59 | 22.32 | 320700 |
| 2011-02-10 | 21.21 | 21.45 | 236200 |
| 2011-02-09 | 21.54 | 21.41 | 211200 |
| 2011-02-08 | 22.01 | 21.78 | 149900 |
| 2011-02-07 | 22.17 | 22.21 | 55900 |
| 2011-02-04 | 22.19 | 22.12 | 97900 |
| 2011-02-03 | 22.52 | 22.54 | 214700 |
| 2011-02-02 | 22.21 | 22.27 | 101300 |
| 2011-02-01 | 22.42 | 22.41 | 258400 |
| 2011-01-31 | 22.47 | 22.61 | 219900 |
| 2011-01-28 | 22.52 | 22.15 | 221900 |
| 2011-01-27 | 23.03 | 22.92 | 74200 |
| 2011-01-26 | 23.25 | 23.22 | 172500 |
| 2011-01-25 | 23.25 | 23.38 | 95600 |
| 2011-01-24 | 23.54 | 23.52 | 98100 |
| 2011-01-21 | 23.13 | 23.35 | 224300 |
| 2011-01-20 | 24.22 | 23.74 | 114200 |
| 2011-01-19 | 24.54 | 24.19 | 46600 |
| 2011-01-18 | 24.28 | 24.50 | 87900 |
| 2011-01-14 | 24.47 | 24.22 | 170500 |
| 2011-01-13 | 24.96 | 24.69 | 145300 |
| 2011-01-12 | 25.05 | 25.29 | 222600 |
| 2011-01-11 | 25.11 | 24.75 | 148100 |
| 2011-01-10 | 24.77 | 24.55 | 276400 |
| 2011-01-07 | 25.72 | 25.18 | 172600 |
| 2011-01-06 | 25.80 | 25.74 | 90600 |
| 2011-01-05 | 25.87 | 25.94 | 94600 |
| 2011-01-04 | 26.42 | 26.17 | 149600 |
| 2011-01-03 | 25.77 | 26.05 | 55500 |
| 2010-12-31 | 25.58 | 25.65 | 49900 |
| 2010-12-30 | 25.49 | 25.49 | 77100 |
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