| 2011-02-14 | 31.05 | 31.05 | 300 |
| 2011-02-11 | 31.97 | 31.60 | 1000 |
| 2011-02-10 | 31.59 | 31.63 | 1300 |
| 2011-02-09 | 31.60 | 31.43 | 1000 |
| 2011-02-08 | 31.27 | 30.93 | 3100 |
| 2011-02-07 | 31.42 | 31.27 | 5400 |
| 2011-02-04 | 31.44 | 31.35 | 3900 |
| 2011-02-03 | 31.50 | 31.50 | 100 |
| 2011-02-02 | 31.75 | 31.88 | 50100 |
| 2011-02-01 | 33.16 | 32.47 | 3300 |
| 2011-01-31 | 33.76 | 33.76 | 400 |
| 2011-01-28 | 32.99 | 33.91 | 6500 |
| 2011-01-27 | 33.10 | 32.76 | 7100 |
| 2011-01-26 | 32.85 | 32.79 | 1100 |
| 2011-01-25 | 32.90 | 32.99 | 2100 |
| 2011-01-24 | 33.74 | 33.45 | 600 |
| 2011-01-21 | 33.69 | 33.90 | 3900 |
| 2011-01-20 | 33.33 | 33.20 | 700 |
| 2011-01-19 | 32.33 | 32.33 | 200 |
| 2011-01-18 | 32.61 | 32.46 | 3000 |
| 2011-01-14 | 33.10 | 32.40 | 3600 |
| 2011-01-13 | 32.45 | 32.62 | 3800 |
| 2011-01-12 | 32.78 | 32.65 | 900 |
| 2011-01-11 | 33.29 | 33.10 | 800 |
| 2011-01-10 | 33.84 | 33.77 | 2500 |
| 2011-01-07 | 33.50 | 33.62 | 1500 |
| 2011-01-06 | 33.87 | 33.94 | 400 |
| 2011-01-05 | 33.94 | 33.75 | 1400 |
| 2011-01-04 | 33.49 | 33.71 | 1100 |
| 2011-01-03 | 33.68 | 33.50 | 4700 |
| 2010-12-31 | 34.31 | 34.00 | 3100 |
| 2010-12-30 | 34.09 | 34.36 | 11200 |
|
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