| 2011-02-14 | 4.35 | 4.38 | 117500 |
| 2011-02-11 | 4.33 | 4.38 | 32800 |
| 2011-02-10 | 4.25 | 4.30 | 34800 |
| 2011-02-09 | 4.10 | 4.25 | 45800 |
| 2011-02-08 | 3.99 | 4.07 | 33700 |
| 2011-02-07 | 3.99 | 4.01 | 59900 |
| 2011-02-04 | 3.86 | 4.00 | 82900 |
| 2011-02-03 | 3.96 | 3.87 | 88700 |
| 2011-02-02 | 4.00 | 3.98 | 97500 |
| 2011-02-01 | 4.02 | 4.03 | 29600 |
| 2011-01-31 | 3.92 | 4.00 | 48300 |
| 2011-01-28 | 4.01 | 3.96 | 45300 |
| 2011-01-27 | 3.88 | 3.99 | 49000 |
| 2011-01-26 | 3.80 | 3.98 | 112400 |
| 2011-01-25 | 3.84 | 3.85 | 47200 |
| 2011-01-24 | 3.88 | 3.89 | 147100 |
| 2011-01-21 | 3.97 | 3.91 | 129700 |
| 2011-01-20 | 4.05 | 4.00 | 160000 |
| 2011-01-19 | 4.13 | 4.05 | 39900 |
| 2011-01-18 | 4.14 | 4.16 | 25800 |
| 2011-01-14 | 4.15 | 4.16 | 37600 |
| 2011-01-13 | 4.19 | 4.16 | 38300 |
| 2011-01-12 | 4.21 | 4.20 | 71800 |
| 2011-01-11 | 4.31 | 4.24 | 124500 |
| 2011-01-10 | 4.11 | 4.33 | 79000 |
| 2011-01-07 | 4.15 | 4.14 | 45300 |
| 2011-01-06 | 4.05 | 4.10 | 25500 |
| 2011-01-05 | 4.09 | 4.07 | 37700 |
| 2011-01-04 | 4.04 | 4.08 | 97200 |
| 2011-01-03 | 4.17 | 4.07 | 72600 |
| 2010-12-31 | 4.07 | 4.12 | 102700 |
| 2010-12-30 | 4.08 | 4.10 | 121600 |
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