| 2011-04-07 | 1.99 | 2.04 | 41500 |
| 2011-04-06 | 1.94 | 1.95 | 4600 |
| 2011-04-05 | 1.91 | 1.97 | 3300 |
| 2011-04-04 | 1.87 | 1.94 | 19200 |
| 2011-04-01 | 2.09 | 2.00 | 4000 |
| 2011-03-31 | 2.04 | 2.14 | 25300 |
| 2011-03-30 | 2.18 | 2.15 | 7000 |
| 2011-03-29 | 2.11 | 2.11 | 44400 |
| 2011-03-28 | 1.99 | 2.10 | 117600 |
| 2011-03-25 | 1.91 | 1.87 | 14800 |
| 2011-03-24 | 1.91 | 1.91 | 15700 |
| 2011-03-23 | 1.85 | 1.91 | 14600 |
| 2011-03-22 | 1.75 | 1.85 | 27100 |
| 2011-03-21 | 1.71 | 1.80 | 81200 |
| 2011-03-18 | 1.70 | 1.58 | 37900 |
| 2011-03-17 | 1.66 | 1.60 | 43300 |
| 2011-03-16 | 1.50 | 1.60 | 71900 |
| 2011-03-15 | 1.90 | 1.43 | 269300 |
| 2011-03-14 | 1.78 | 1.88 | 11700 |
| 2011-03-11 | 1.88 | 1.78 | 11800 |
| 2011-03-10 | 1.90 | 1.91 | 38100 |
| 2011-03-09 | 1.97 | 1.95 | 125100 |
| 2011-03-08 | 2.09 | 2.07 | 4600 |
| 2011-03-07 | 1.99 | 2.12 | 24200 |
| 2011-03-04 | 2.17 | 2.09 | 235100 |
| 2011-03-03 | 2.15 | 2.17 | 1500 |
| 2011-03-02 | 2.12 | 2.11 | 3100 |
| 2011-03-01 | 2.15 | 2.18 | 5500 |
| 2011-02-28 | 2.20 | 2.20 | 12400 |
| 2011-02-25 | 2.13 | 2.20 | 21100 |
| 2011-02-24 | 2.19 | 2.13 | 14700 |
| 2011-02-23 | 2.21 | 2.13 | 33000 |
|
|