| 2011-02-14 | 24.99 | 24.99 | 217100 |
| 2011-02-11 | 24.99 | 24.99 | 157000 |
| 2011-02-10 | 24.99 | 24.99 | 170600 |
| 2011-02-09 | 24.99 | 24.99 | 96900 |
| 2011-02-08 | 25.00 | 24.99 | 150000 |
| 2011-02-07 | 24.99 | 24.99 | 121200 |
| 2011-02-04 | 25.00 | 24.99 | 110100 |
| 2011-02-03 | 24.99 | 25.00 | 847900 |
| 2011-02-02 | 24.99 | 24.99 | 96000 |
| 2011-02-01 | 24.99 | 24.99 | 142500 |
| 2011-01-31 | 24.99 | 24.99 | 62400 |
| 2011-01-28 | 24.99 | 24.99 | 111100 |
| 2011-01-27 | 24.99 | 24.99 | 171700 |
| 2011-01-26 | 25.00 | 24.99 | 146900 |
| 2011-01-25 | 24.99 | 25.00 | 134100 |
| 2011-01-24 | 24.99 | 24.99 | 190100 |
| 2011-01-21 | 24.99 | 24.99 | 141500 |
| 2011-01-20 | 24.99 | 24.99 | 162000 |
| 2011-01-19 | 24.99 | 25.00 | 224700 |
| 2011-01-18 | 25.00 | 24.99 | 248200 |
| 2011-01-14 | 24.99 | 24.99 | 663500 |
| 2011-01-13 | 25.01 | 25.00 | 143300 |
| 2011-01-12 | 25.01 | 25.00 | 139600 |
| 2011-01-11 | 25.00 | 25.00 | 142900 |
| 2011-01-10 | 25.00 | 25.00 | 99300 |
| 2011-01-07 | 25.00 | 25.00 | 352000 |
| 2011-01-06 | 25.00 | 24.99 | 1064400 |
| 2011-01-05 | 24.99 | 25.00 | 224700 |
| 2011-01-04 | 24.99 | 24.99 | 102200 |
| 2011-01-03 | 24.99 | 24.99 | 210200 |
| 2010-12-31 | 24.99 | 24.99 | 292000 |
| 2010-12-30 | 24.99 | 24.99 | 113400 |
|
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