| 2011-02-14 | 20.93 | 21.16 | 516200 |
| 2011-02-11 | 20.85 | 20.85 | 106100 |
| 2011-02-10 | 20.61 | 20.86 | 166400 |
| 2011-02-09 | 21.00 | 20.74 | 167700 |
| 2011-02-08 | 21.11 | 21.09 | 283000 |
| 2011-02-07 | 21.05 | 21.08 | 687200 |
| 2011-02-04 | 21.12 | 20.92 | 139500 |
| 2011-02-03 | 21.00 | 21.03 | 245200 |
| 2011-02-02 | 21.09 | 21.10 | 214100 |
| 2011-02-01 | 20.98 | 21.10 | 408200 |
| 2011-01-31 | 20.28 | 20.85 | 397000 |
| 2011-01-28 | 20.25 | 20.16 | 147100 |
| 2011-01-27 | 20.34 | 20.24 | 255700 |
| 2011-01-26 | 19.98 | 20.42 | 203500 |
| 2011-01-25 | 20.10 | 19.94 | 249500 |
| 2011-01-24 | 20.00 | 20.19 | 243800 |
| 2011-01-21 | 20.07 | 20.02 | 160100 |
| 2011-01-20 | 20.00 | 19.92 | 274500 |
| 2011-01-19 | 20.50 | 20.12 | 796000 |
| 2011-01-18 | 20.40 | 20.48 | 249500 |
| 2011-01-14 | 20.11 | 20.36 | 348500 |
| 2011-01-13 | 20.22 | 20.16 | 155300 |
| 2011-01-12 | 20.02 | 20.19 | 195100 |
| 2011-01-11 | 19.84 | 19.95 | 349000 |
| 2011-01-10 | 19.55 | 19.73 | 114600 |
| 2011-01-07 | 19.64 | 19.65 | 149000 |
| 2011-01-06 | 19.82 | 19.65 | 235300 |
| 2011-01-05 | 19.50 | 19.67 | 261500 |
| 2011-01-04 | 19.97 | 19.59 | 434400 |
| 2011-01-03 | 19.75 | 19.84 | 344900 |
| 2010-12-31 | 19.65 | 19.68 | 118800 |
| 2010-12-30 | 19.65 | 19.63 | 235500 |
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