| 2011-04-07 | 2.15 | 2.22 | 56800 |
| 2011-04-06 | 2.22 | 2.15 | 73200 |
| 2011-04-05 | 2.24 | 2.22 | 66200 |
| 2011-04-04 | 2.23 | 2.25 | 50800 |
| 2011-04-01 | 2.14 | 2.21 | 105600 |
| 2011-03-31 | 2.16 | 2.12 | 126400 |
| 2011-03-30 | 2.25 | 2.17 | 152800 |
| 2011-03-29 | 2.26 | 2.22 | 69300 |
| 2011-03-28 | 2.35 | 2.25 | 70600 |
| 2011-03-25 | 2.37 | 2.33 | 48300 |
| 2011-03-24 | 2.34 | 2.35 | 63200 |
| 2011-03-23 | 2.26 | 2.33 | 114700 |
| 2011-03-22 | 1.99 | 2.26 | 67800 |
| 2011-03-21 | 2.19 | 2.27 | 135000 |
| 2011-03-18 | 2.25 | 2.19 | 33900 |
| 2011-03-17 | 2.22 | 2.17 | 58800 |
| 2011-03-16 | 2.15 | 2.17 | 41400 |
| 2011-03-15 | 2.15 | 2.12 | 137000 |
| 2011-03-14 | 2.09 | 2.15 | 117100 |
| 2011-03-11 | 2.16 | 2.17 | 43900 |
| 2011-03-10 | 2.15 | 2.16 | 124700 |
| 2011-03-09 | 2.22 | 2.18 | 80100 |
| 2011-03-08 | 2.19 | 2.21 | 69800 |
| 2011-03-07 | 2.28 | 2.18 | 115400 |
| 2011-03-04 | 2.30 | 2.26 | 81400 |
| 2011-03-03 | 2.26 | 2.28 | 89500 |
| 2011-03-02 | 2.32 | 2.25 | 100700 |
| 2011-03-01 | 2.26 | 2.28 | 87800 |
| 2011-02-28 | 2.18 | 2.25 | 216300 |
| 2011-02-25 | 2.17 | 2.20 | 408400 |
| 2011-02-24 | 2.28 | 2.17 | 228200 |
| 2011-02-23 | 2.18 | 2.18 | 190400 |
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