| 2011-02-14 | 20.35 | 20.27 | 51900 |
| 2011-02-11 | 20.26 | 20.33 | 25000 |
| 2011-02-10 | 20.17 | 20.36 | 21200 |
| 2011-02-09 | 20.55 | 20.34 | 15700 |
| 2011-02-08 | 20.45 | 20.50 | 122600 |
| 2011-02-07 | 20.41 | 20.38 | 55800 |
| 2011-02-04 | 20.20 | 20.15 | 116700 |
| 2011-02-03 | 20.07 | 20.14 | 24500 |
| 2011-02-02 | 20.06 | 20.15 | 46600 |
| 2011-02-01 | 19.98 | 20.13 | 56000 |
| 2011-01-31 | 19.80 | 19.86 | 37300 |
| 2011-01-28 | 20.17 | 19.65 | 73500 |
| 2011-01-27 | 19.97 | 20.06 | 33900 |
| 2011-01-26 | 19.98 | 20.00 | 88900 |
| 2011-01-25 | 19.77 | 19.97 | 92100 |
| 2011-01-24 | 19.73 | 19.82 | 103300 |
| 2011-01-21 | 19.86 | 19.69 | 18800 |
| 2011-01-20 | 19.61 | 19.70 | 19800 |
| 2011-01-19 | 19.85 | 19.68 | 21700 |
| 2011-01-18 | 19.53 | 19.82 | 55800 |
| 2011-01-14 | 19.46 | 19.57 | 16700 |
| 2011-01-13 | 19.50 | 19.47 | 19300 |
| 2011-01-12 | 19.36 | 19.48 | 17800 |
| 2011-01-11 | 19.31 | 19.22 | 16400 |
| 2011-01-10 | 19.23 | 19.19 | 15800 |
| 2011-01-07 | 19.20 | 19.30 | 31000 |
| 2011-01-06 | 19.08 | 19.16 | 14900 |
| 2011-01-05 | 18.80 | 19.01 | 27100 |
| 2011-01-04 | 18.93 | 18.85 | 21100 |
| 2011-01-03 | 18.83 | 18.88 | 48400 |
| 2010-12-31 | 18.64 | 18.71 | 14000 |
| 2010-12-30 | 18.67 | 18.69 | 16400 |
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