| 2011-02-14 | 2.50 | 2.48 | 5300 |
| 2011-02-11 | 2.50 | 2.39 | 2600 |
| 2011-02-10 | 2.41 | 2.50 | 3100 |
| 2011-02-09 | 2.54 | 2.54 | 000 |
| 2011-02-08 | 2.54 | 2.54 | 700 |
| 2011-02-07 | 2.60 | 2.49 | 8100 |
| 2011-02-04 | 2.53 | 2.58 | 9400 |
| 2011-02-03 | 2.42 | 2.59 | 21500 |
| 2011-02-02 | 2.50 | 2.40 | 4400 |
| 2011-02-01 | 2.45 | 2.45 | 800 |
| 2011-01-31 | 2.36 | 2.40 | 14700 |
| 2011-01-28 | 2.35 | 2.24 | 7900 |
| 2011-01-27 | 2.29 | 2.35 | 5700 |
| 2011-01-26 | 2.40 | 2.35 | 7400 |
| 2011-01-25 | 2.42 | 2.40 | 3700 |
| 2011-01-24 | 2.36 | 2.42 | 3000 |
| 2011-01-21 | 2.39 | 2.39 | 000 |
| 2011-01-20 | 2.36 | 2.39 | 6500 |
| 2011-01-19 | 2.29 | 2.39 | 23400 |
| 2011-01-18 | 2.15 | 2.18 | 6100 |
| 2011-01-14 | 2.25 | 2.13 | 41400 |
| 2011-01-13 | 2.15 | 2.21 | 18400 |
| 2011-01-12 | 2.17 | 2.15 | 300 |
| 2011-01-11 | 2.15 | 2.22 | 12500 |
| 2011-01-10 | 2.10 | 2.10 | 000 |
| 2011-01-07 | 2.10 | 2.10 | 200 |
| 2011-01-06 | 2.20 | 2.20 | 11100 |
| 2011-01-05 | 2.05 | 2.20 | 9700 |
| 2011-01-04 | 2.13 | 2.11 | 3400 |
| 2011-01-03 | 2.11 | 2.20 | 5400 |
| 2010-12-31 | 1.99 | 2.01 | 14100 |
| 2010-12-30 | 1.90 | 1.90 | 17900 |
|
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