| 2011-02-14 | 21.10 | 21.11 | 6200 |
| 2011-02-11 | 21.15 | 21.08 | 8100 |
| 2011-02-10 | 21.05 | 21.14 | 16100 |
| 2011-02-09 | 21.04 | 20.96 | 6800 |
| 2011-02-08 | 21.05 | 20.97 | 7100 |
| 2011-02-07 | 21.06 | 20.93 | 9000 |
| 2011-02-04 | 20.98 | 20.95 | 23700 |
| 2011-02-03 | 20.82 | 21.09 | 36000 |
| 2011-02-02 | 20.83 | 20.84 | 10700 |
| 2011-02-01 | 20.85 | 20.88 | 26000 |
| 2011-01-31 | 20.92 | 20.81 | 19700 |
| 2011-01-28 | 20.96 | 20.79 | 16600 |
| 2011-01-27 | 20.90 | 20.89 | 21900 |
| 2011-01-26 | 21.14 | 21.00 | 19400 |
| 2011-01-25 | 20.90 | 20.95 | 16000 |
| 2011-01-24 | 20.80 | 20.88 | 20000 |
| 2011-01-21 | 20.89 | 20.70 | 16800 |
| 2011-01-20 | 20.83 | 20.75 | 14300 |
| 2011-01-19 | 21.06 | 20.92 | 16100 |
| 2011-01-18 | 20.96 | 20.96 | 16200 |
| 2011-01-14 | 21.08 | 20.94 | 16200 |
| 2011-01-13 | 21.04 | 21.01 | 18100 |
| 2011-01-12 | 21.19 | 21.09 | 11400 |
| 2011-01-11 | 20.92 | 21.09 | 21600 |
| 2011-01-10 | 21.00 | 20.91 | 13400 |
| 2011-01-07 | 21.10 | 21.05 | 14100 |
| 2011-01-06 | 21.16 | 21.07 | 13800 |
| 2011-01-05 | 20.89 | 21.06 | 13900 |
| 2011-01-04 | 21.22 | 21.02 | 27900 |
| 2011-01-03 | 20.88 | 21.10 | 30200 |
| 2010-12-31 | 20.55 | 20.70 | 23900 |
| 2010-12-30 | 20.75 | 20.66 | 38100 |
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