| 2011-02-14 | 20.18 | 20.36 | 4100 |
| 2011-02-11 | 19.89 | 20.27 | 4000 |
| 2011-02-10 | 19.88 | 19.84 | 3100 |
| 2011-02-09 | 20.30 | 20.03 | 6900 |
| 2011-02-08 | 20.29 | 20.35 | 4500 |
| 2011-02-07 | 19.86 | 20.34 | 4700 |
| 2011-02-04 | 20.03 | 19.91 | 5900 |
| 2011-02-03 | 19.97 | 20.02 | 6500 |
| 2011-02-02 | 19.78 | 19.99 | 8400 |
| 2011-02-01 | 19.13 | 19.94 | 8200 |
| 2011-01-31 | 18.97 | 19.08 | 7700 |
| 2011-01-28 | 19.54 | 18.95 | 16000 |
| 2011-01-27 | 19.60 | 19.49 | 9400 |
| 2011-01-26 | 19.29 | 19.58 | 4700 |
| 2011-01-25 | 19.15 | 19.17 | 9900 |
| 2011-01-24 | 19.63 | 19.06 | 16400 |
| 2011-01-21 | 19.92 | 19.52 | 17700 |
| 2011-01-20 | 20.25 | 19.90 | 11300 |
| 2011-01-19 | 20.87 | 20.31 | 11400 |
| 2011-01-18 | 21.09 | 20.96 | 3700 |
| 2011-01-14 | 20.90 | 21.07 | 5700 |
| 2011-01-13 | 21.13 | 20.90 | 7400 |
| 2011-01-12 | 21.13 | 21.06 | 8800 |
| 2011-01-11 | 20.75 | 21.12 | 6800 |
| 2011-01-10 | 20.43 | 20.65 | 6300 |
| 2011-01-07 | 20.78 | 20.73 | 8300 |
| 2011-01-06 | 20.73 | 20.85 | 4700 |
| 2011-01-05 | 20.90 | 20.87 | 7200 |
| 2011-01-04 | 21.05 | 20.99 | 10000 |
| 2011-01-03 | 21.59 | 21.10 | 11100 |
| 2010-12-31 | 21.15 | 21.49 | 7200 |
| 2010-12-30 | 21.05 | 21.27 | 4800 |
|
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