| 2011-02-14 | 21.16 | 22.24 | 1300 |
| 2011-02-11 | 22.24 | 21.59 | 500 |
| 2011-02-10 | 22.23 | 22.23 | 000 |
| 2011-02-09 | 22.23 | 22.23 | 100 |
| 2011-02-08 | 22.22 | 22.14 | 400 |
| 2011-02-07 | 21.11 | 21.11 | 100 |
| 2011-02-04 | 22.01 | 22.01 | 100 |
| 2011-02-03 | 22.00 | 22.00 | 100 |
| 2011-02-02 | 21.99 | 21.99 | 100 |
| 2011-02-01 | 21.04 | 22.00 | 300 |
| 2011-01-31 | 22.00 | 22.00 | 000 |
| 2011-01-28 | 21.78 | 22.00 | 10200 |
| 2011-01-27 | 22.00 | 22.00 | 3900 |
| 2011-01-26 | 22.00 | 22.15 | 6500 |
| 2011-01-25 | 22.00 | 22.14 | 200 |
| 2011-01-24 | 21.55 | 21.55 | 000 |
| 2011-01-21 | 21.54 | 21.55 | 200 |
| 2011-01-20 | 21.75 | 21.53 | 400 |
| 2011-01-19 | 22.25 | 22.00 | 400 |
| 2011-01-18 | 21.84 | 21.94 | 600 |
| 2011-01-14 | 20.25 | 21.75 | 600 |
| 2011-01-13 | 20.99 | 21.50 | 1100 |
| 2011-01-12 | 21.00 | 21.00 | 1100 |
| 2011-01-11 | 20.48 | 21.00 | 4000 |
| 2011-01-10 | 20.60 | 19.96 | 9000 |
| 2011-01-07 | 22.27 | 20.59 | 11700 |
| 2011-01-06 | 21.49 | 22.25 | 1300 |
| 2011-01-05 | 21.26 | 21.98 | 600 |
| 2011-01-04 | 22.50 | 22.50 | 000 |
| 2011-01-03 | 21.70 | 22.50 | 900 |
| 2010-12-31 | 20.88 | 21.61 | 1700 |
| 2010-12-30 | 20.67 | 21.94 | 400 |
|
|