| 2011-02-14 | 4.75 | 4.65 | 380000 |
| 2011-02-11 | 4.52 | 4.69 | 755200 |
| 2011-02-10 | 3.99 | 4.67 | 1936200 |
| 2011-02-09 | 3.91 | 3.93 | 146200 |
| 2011-02-08 | 3.84 | 3.89 | 67600 |
| 2011-02-07 | 4.10 | 3.84 | 144100 |
| 2011-02-04 | 4.14 | 3.91 | 407700 |
| 2011-02-03 | 3.48 | 4.20 | 768800 |
| 2011-02-02 | 3.36 | 3.45 | 64600 |
| 2011-02-01 | 3.29 | 3.32 | 34300 |
| 2011-01-31 | 3.40 | 3.30 | 33700 |
| 2011-01-28 | 3.22 | 3.46 | 40400 |
| 2011-01-27 | 3.26 | 3.25 | 32800 |
| 2011-01-26 | 3.22 | 3.30 | 25100 |
| 2011-01-25 | 3.40 | 3.25 | 35200 |
| 2011-01-24 | 3.48 | 3.43 | 30800 |
| 2011-01-21 | 3.23 | 3.41 | 39100 |
| 2011-01-20 | 3.25 | 3.26 | 33600 |
| 2011-01-19 | 3.23 | 3.33 | 42200 |
| 2011-01-18 | 3.27 | 3.19 | 79400 |
| 2011-01-14 | 3.51 | 3.30 | 89100 |
| 2011-01-13 | 3.58 | 3.55 | 50300 |
| 2011-01-12 | 3.53 | 3.55 | 42300 |
| 2011-01-11 | 3.55 | 3.55 | 50000 |
| 2011-01-10 | 3.49 | 3.55 | 31200 |
| 2011-01-07 | 3.53 | 3.46 | 27000 |
| 2011-01-06 | 3.51 | 3.49 | 63200 |
| 2011-01-05 | 3.50 | 3.49 | 40600 |
| 2011-01-04 | 3.48 | 3.50 | 53000 |
| 2011-01-03 | 3.51 | 3.46 | 93900 |
| 2010-12-31 | 3.40 | 3.49 | 93700 |
| 2010-12-30 | 3.44 | 3.44 | 36300 |
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