| 2011-04-07 | 69.99 | 69.58 | 30500 |
| 2011-04-06 | 69.84 | 69.92 | 32500 |
| 2011-04-05 | 69.60 | 69.44 | 21400 |
| 2011-04-04 | 69.72 | 69.59 | 33400 |
| 2011-04-01 | 69.40 | 69.58 | 30100 |
| 2011-03-31 | 69.41 | 69.07 | 44300 |
| 2011-03-30 | 68.69 | 69.21 | 120800 |
| 2011-03-29 | 67.95 | 68.35 | 31200 |
| 2011-03-28 | 68.15 | 67.77 | 56800 |
| 2011-03-25 | 68.43 | 68.05 | 39900 |
| 2011-03-24 | 68.84 | 68.60 | 137700 |
| 2011-03-23 | 68.61 | 68.32 | 32600 |
| 2011-03-22 | 68.60 | 68.38 | 33800 |
| 2011-03-21 | 68.35 | 68.32 | 56000 |
| 2011-03-18 | 67.87 | 67.37 | 31300 |
| 2011-03-17 | 67.64 | 67.08 | 55900 |
| 2011-03-16 | 67.68 | 66.90 | 113300 |
| 2011-03-15 | 68.28 | 67.93 | 79200 |
| 2011-03-14 | 69.27 | 69.13 | 62500 |
| 2011-03-11 | 69.70 | 69.92 | 42100 |
| 2011-03-10 | 70.41 | 69.69 | 46800 |
| 2011-03-09 | 70.00 | 70.74 | 185000 |
| 2011-03-08 | 69.37 | 70.03 | 54600 |
| 2011-03-07 | 69.36 | 69.30 | 51600 |
| 2011-03-04 | 69.73 | 69.14 | 42800 |
| 2011-03-03 | 69.37 | 69.54 | 35200 |
| 2011-03-02 | 68.59 | 68.84 | 45600 |
| 2011-03-01 | 69.25 | 68.61 | 68100 |
| 2011-02-28 | 68.79 | 69.16 | 46800 |
| 2011-02-25 | 68.15 | 68.46 | 15500 |
| 2011-02-24 | 68.41 | 67.94 | 37200 |
| 2011-02-23 | 68.43 | 68.19 | 30900 |
|
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