| 2011-02-14 | 20.00 | 19.92 | 135800 |
| 2011-02-11 | 19.83 | 20.08 | 170800 |
| 2011-02-10 | 19.97 | 19.93 | 221500 |
| 2011-02-09 | 20.18 | 20.46 | 323200 |
| 2011-02-08 | 20.04 | 20.31 | 148400 |
| 2011-02-07 | 20.07 | 20.08 | 214300 |
| 2011-02-04 | 20.39 | 20.11 | 226200 |
| 2011-02-03 | 20.50 | 20.28 | 195400 |
| 2011-02-02 | 20.08 | 20.34 | 268200 |
| 2011-02-01 | 20.08 | 20.20 | 211400 |
| 2011-01-31 | 19.97 | 20.04 | 213000 |
| 2011-01-28 | 20.22 | 19.86 | 303900 |
| 2011-01-27 | 20.76 | 20.30 | 385700 |
| 2011-01-26 | 20.62 | 20.87 | 315400 |
| 2011-01-25 | 20.54 | 20.54 | 300200 |
| 2011-01-24 | 20.59 | 20.72 | 212800 |
| 2011-01-21 | 21.21 | 20.64 | 257200 |
| 2011-01-20 | 20.67 | 20.80 | 173200 |
| 2011-01-19 | 21.34 | 20.82 | 286100 |
| 2011-01-18 | 20.90 | 21.43 | 260800 |
| 2011-01-14 | 21.52 | 21.02 | 399100 |
| 2011-01-13 | 21.33 | 21.44 | 303300 |
| 2011-01-12 | 21.13 | 21.33 | 179800 |
| 2011-01-11 | 21.26 | 21.09 | 205000 |
| 2011-01-10 | 21.01 | 21.26 | 397800 |
| 2011-01-07 | 21.26 | 21.21 | 630700 |
| 2011-01-06 | 20.28 | 21.40 | 2013400 |
| 2011-01-05 | 18.49 | 18.95 | 469100 |
| 2011-01-04 | 18.64 | 18.54 | 385600 |
| 2011-01-03 | 18.55 | 18.54 | 260300 |
| 2010-12-31 | 18.54 | 18.59 | 146400 |
| 2010-12-30 | 18.77 | 18.54 | 87700 |
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