| 2011-02-14 | 25.91 | 26.03 | 2471400 |
| 2011-02-11 | 25.58 | 25.79 | 3467400 |
| 2011-02-10 | 25.72 | 25.86 | 7575300 |
| 2011-02-09 | 25.95 | 25.97 | 2101800 |
| 2011-02-08 | 25.98 | 26.10 | 3326200 |
| 2011-02-07 | 25.91 | 25.95 | 2173000 |
| 2011-02-04 | 25.98 | 25.86 | 3328500 |
| 2011-02-03 | 25.47 | 25.63 | 2432300 |
| 2011-02-02 | 25.24 | 25.29 | 2644200 |
| 2011-02-01 | 25.17 | 25.37 | 4097800 |
| 2011-01-31 | 24.74 | 24.87 | 3533400 |
| 2011-01-28 | 25.01 | 24.57 | 3778000 |
| 2011-01-27 | 24.99 | 25.03 | 5493300 |
| 2011-01-26 | 25.00 | 25.10 | 5997800 |
| 2011-01-25 | 24.77 | 24.91 | 4466100 |
| 2011-01-24 | 24.76 | 25.03 | 1437800 |
| 2011-01-21 | 24.75 | 24.64 | 2170400 |
| 2011-01-20 | 24.63 | 24.66 | 3500500 |
| 2011-01-19 | 25.33 | 25.08 | 1851100 |
| 2011-01-18 | 25.02 | 25.10 | 2470000 |
| 2011-01-14 | 24.74 | 24.89 | 2690800 |
| 2011-01-13 | 25.00 | 24.88 | 3870100 |
| 2011-01-12 | 24.65 | 24.71 | 5263900 |
| 2011-01-11 | 24.36 | 24.41 | 4154900 |
| 2011-01-10 | 24.30 | 24.45 | 3859700 |
| 2011-01-07 | 24.50 | 24.42 | 4693500 |
| 2011-01-06 | 24.70 | 24.51 | 4409300 |
| 2011-01-05 | 24.54 | 24.76 | 2853400 |
| 2011-01-04 | 25.07 | 24.93 | 4275000 |
| 2011-01-03 | 25.55 | 25.59 | 2191400 |
| 2010-12-31 | 25.23 | 25.44 | 1096200 |
| 2010-12-30 | 25.42 | 25.42 | 981700 |
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