| 2011-02-14 | 21.47 | 21.41 | 15500 |
| 2011-02-11 | 20.81 | 21.73 | 800 |
| 2011-02-10 | 21.61 | 21.61 | 000 |
| 2011-02-09 | 21.81 | 21.61 | 400 |
| 2011-02-08 | 21.20 | 21.20 | 000 |
| 2011-02-07 | 21.63 | 21.20 | 2500 |
| 2011-02-04 | 21.15 | 21.15 | 600 |
| 2011-02-03 | 21.11 | 21.11 | 400 |
| 2011-02-02 | 21.40 | 21.40 | 200 |
| 2011-02-01 | 21.11 | 21.27 | 2900 |
| 2011-01-31 | 20.67 | 20.79 | 1100 |
| 2011-01-28 | 20.87 | 20.65 | 2000 |
| 2011-01-27 | 20.95 | 21.05 | 3900 |
| 2011-01-26 | 20.85 | 20.86 | 800 |
| 2011-01-25 | 20.96 | 20.96 | 000 |
| 2011-01-24 | 20.85 | 20.96 | 2000 |
| 2011-01-21 | 20.81 | 20.67 | 3000 |
| 2011-01-20 | 20.63 | 20.57 | 14900 |
| 2011-01-19 | 20.75 | 20.77 | 2300 |
| 2011-01-18 | 20.70 | 20.70 | 000 |
| 2011-01-14 | 20.70 | 20.70 | 200 |
| 2011-01-13 | 20.25 | 20.25 | 000 |
| 2011-01-12 | 20.25 | 20.25 | 800 |
| 2011-01-11 | 19.65 | 19.65 | 200 |
| 2011-01-10 | 19.41 | 19.41 | 200 |
| 2011-01-07 | 19.73 | 19.73 | 000 |
| 2011-01-06 | 19.90 | 19.73 | 5700 |
| 2011-01-05 | 19.75 | 19.75 | 800 |
| 2011-01-04 | 19.96 | 19.87 | 700 |
| 2011-01-03 | 20.09 | 20.09 | 300 |
| 2010-12-31 | 19.81 | 19.81 | 200 |
| 2010-12-30 | 19.66 | 19.76 | 800 |
|
|