| 2011-02-14 | 0.45 | 0.54 | 124000 |
| 2011-02-11 | 0.60 | 0.45 | 285600 |
| 2011-02-10 | 0.87 | 0.60 | 471600 |
| 2011-02-09 | 0.62 | 0.86 | 483200 |
| 2011-02-08 | 0.45 | 0.62 | 359100 |
| 2011-02-07 | 0.33 | 0.44 | 390100 |
| 2011-02-04 | 0.30 | 0.32 | 106600 |
| 2011-02-03 | 0.28 | 0.30 | 188600 |
| 2011-02-02 | 0.24 | 0.29 | 107900 |
| 2011-02-01 | 0.22 | 0.24 | 53800 |
| 2011-01-31 | 0.20 | 0.22 | 32000 |
| 2011-01-28 | 0.20 | 0.20 | 77200 |
| 2011-01-27 | 0.18 | 0.19 | 144100 |
| 2011-01-26 | 0.16 | 0.15 | 57000 |
| 2011-01-25 | 0.16 | 0.16 | 18500 |
| 2011-01-24 | 0.18 | 0.17 | 67300 |
| 2011-01-21 | 0.18 | 0.18 | 25300 |
| 2011-01-20 | 0.15 | 0.14 | 9800 |
| 2011-01-19 | 0.14 | 0.15 | 25100 |
| 2011-01-18 | 0.17 | 0.15 | 107800 |
| 2011-01-14 | 0.14 | 0.17 | 13400 |
| 2011-01-13 | 0.14 | 0.14 | 23700 |
| 2011-01-12 | 0.14 | 0.14 | 271800 |
| 2011-01-11 | 0.15 | 0.15 | 191100 |
| 2011-01-10 | 0.14 | 0.15 | 108900 |
| 2011-01-07 | 0.15 | 0.15 | 27700 |
| 2011-01-06 | 0.15 | 0.15 | 43700 |
| 2011-01-05 | 0.13 | 0.14 | 80800 |
| 2011-01-04 | 0.14 | 0.13 | 30100 |
| 2011-01-03 | 0.12 | 0.12 | 27700 |
| 2010-12-31 | 0.12 | 0.12 | 40000 |
| 2010-12-30 | 0.12 | 0.12 | 98100 |
|
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