| 2011-02-14 | 19.49 | 19.40 | 37900 |
| 2011-02-11 | 19.34 | 19.45 | 22600 |
| 2011-02-10 | 19.25 | 19.34 | 8100 |
| 2011-02-09 | 19.15 | 19.17 | 9500 |
| 2011-02-08 | 19.11 | 19.11 | 10200 |
| 2011-02-07 | 19.12 | 19.13 | 18100 |
| 2011-02-04 | 19.30 | 19.20 | 13800 |
| 2011-02-03 | 19.35 | 19.36 | 13900 |
| 2011-02-02 | 19.50 | 19.39 | 8500 |
| 2011-02-01 | 19.63 | 19.53 | 21200 |
| 2011-01-31 | 19.63 | 19.75 | 16200 |
| 2011-01-28 | 19.46 | 19.59 | 18900 |
| 2011-01-27 | 19.46 | 19.51 | 19100 |
| 2011-01-26 | 19.60 | 19.44 | 11600 |
| 2011-01-25 | 19.77 | 19.62 | 15100 |
| 2011-01-24 | 19.59 | 19.68 | 23100 |
| 2011-01-21 | 19.52 | 19.57 | 18200 |
| 2011-01-20 | 19.13 | 19.52 | 57700 |
| 2011-01-19 | 19.19 | 19.13 | 34600 |
| 2011-01-18 | 18.93 | 18.95 | 64400 |
| 2011-01-14 | 18.93 | 18.84 | 29100 |
| 2011-01-13 | 19.12 | 18.92 | 48500 |
| 2011-01-12 | 19.28 | 19.16 | 38300 |
| 2011-01-11 | 19.38 | 19.38 | 9800 |
| 2011-01-10 | 19.26 | 19.38 | 11300 |
| 2011-01-07 | 19.15 | 19.26 | 9700 |
| 2011-01-06 | 19.06 | 19.14 | 15800 |
| 2011-01-05 | 19.13 | 19.08 | 17800 |
| 2011-01-04 | 19.11 | 19.21 | 19900 |
| 2011-01-03 | 19.39 | 19.17 | 21500 |
| 2010-12-31 | 19.28 | 19.40 | 11300 |
| 2010-12-30 | 19.31 | 19.45 | 17600 |
|
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