| 2011-02-14 | 2.64 | 2.86 | 923300 |
| 2011-02-11 | 2.65 | 2.65 | 816100 |
| 2011-02-10 | 2.47 | 2.57 | 226700 |
| 2011-02-09 | 2.56 | 2.51 | 271900 |
| 2011-02-08 | 2.56 | 2.55 | 322900 |
| 2011-02-07 | 2.56 | 2.59 | 513700 |
| 2011-02-04 | 2.47 | 2.60 | 519400 |
| 2011-02-03 | 2.35 | 2.47 | 465300 |
| 2011-02-02 | 2.27 | 2.39 | 386700 |
| 2011-02-01 | 2.27 | 2.26 | 237700 |
| 2011-01-31 | 2.31 | 2.26 | 506600 |
| 2011-01-28 | 2.47 | 2.30 | 722200 |
| 2011-01-27 | 2.53 | 2.44 | 634700 |
| 2011-01-26 | 2.55 | 2.54 | 376700 |
| 2011-01-25 | 2.56 | 2.53 | 251000 |
| 2011-01-24 | 2.62 | 2.55 | 534100 |
| 2011-01-21 | 2.61 | 2.62 | 401600 |
| 2011-01-20 | 2.62 | 2.64 | 518400 |
| 2011-01-19 | 2.65 | 2.67 | 1033600 |
| 2011-01-18 | 2.67 | 2.67 | 870500 |
| 2011-01-14 | 2.61 | 2.67 | 934500 |
| 2011-01-13 | 2.57 | 2.59 | 622900 |
| 2011-01-12 | 2.50 | 2.56 | 381000 |
| 2011-01-11 | 2.65 | 2.50 | 605100 |
| 2011-01-10 | 2.64 | 2.62 | 680000 |
| 2011-01-07 | 2.49 | 2.56 | 1127500 |
| 2011-01-06 | 2.39 | 2.48 | 1395700 |
| 2011-01-05 | 2.23 | 2.37 | 482900 |
| 2011-01-04 | 2.16 | 2.27 | 523100 |
| 2011-01-03 | 2.30 | 2.15 | 1061400 |
| 2010-12-31 | 2.19 | 2.27 | 321200 |
| 2010-12-30 | 2.26 | 2.19 | 292600 |
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