| 2011-04-07 | 20.14 | 19.75 | 68900 |
| 2011-04-06 | 20.38 | 20.13 | 57800 |
| 2011-04-05 | 19.71 | 20.25 | 57400 |
| 2011-04-04 | 19.82 | 19.79 | 92800 |
| 2011-04-01 | 19.07 | 19.75 | 265900 |
| 2011-03-31 | 17.59 | 18.46 | 57800 |
| 2011-03-30 | 17.45 | 17.62 | 102400 |
| 2011-03-29 | 17.17 | 17.30 | 37100 |
| 2011-03-28 | 17.36 | 17.21 | 39800 |
| 2011-03-25 | 17.39 | 17.25 | 34300 |
| 2011-03-24 | 17.63 | 17.25 | 29000 |
| 2011-03-23 | 17.34 | 17.44 | 21800 |
| 2011-03-22 | 17.33 | 17.44 | 60000 |
| 2011-03-21 | 16.36 | 17.25 | 49300 |
| 2011-03-18 | 16.30 | 15.95 | 141400 |
| 2011-03-17 | 16.29 | 16.08 | 80400 |
| 2011-03-16 | 16.10 | 15.89 | 91400 |
| 2011-03-15 | 16.03 | 16.10 | 56300 |
| 2011-03-14 | 16.41 | 16.55 | 43900 |
| 2011-03-11 | 16.80 | 16.71 | 31900 |
| 2011-03-10 | 17.17 | 16.88 | 66000 |
| 2011-03-09 | 17.60 | 17.41 | 15000 |
| 2011-03-08 | 16.98 | 17.60 | 46300 |
| 2011-03-07 | 17.47 | 16.93 | 49400 |
| 2011-03-04 | 17.84 | 17.41 | 25700 |
| 2011-03-03 | 17.37 | 17.84 | 29800 |
| 2011-03-02 | 17.04 | 17.12 | 39200 |
| 2011-03-01 | 17.32 | 16.98 | 73000 |
| 2011-02-28 | 17.42 | 17.27 | 81000 |
| 2011-02-25 | 17.54 | 17.62 | 34400 |
| 2011-02-24 | 17.63 | 17.49 | 55400 |
| 2011-02-23 | 17.85 | 17.64 | 72300 |
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