| 2011-02-14 | 20.01 | 19.89 | 457300 |
| 2011-02-11 | 20.00 | 19.98 | 1001100 |
| 2011-02-10 | 19.85 | 20.08 | 659000 |
| 2011-02-09 | 19.86 | 19.89 | 625400 |
| 2011-02-08 | 19.75 | 19.93 | 903400 |
| 2011-02-07 | 19.71 | 19.79 | 530600 |
| 2011-02-04 | 19.91 | 19.69 | 431600 |
| 2011-02-03 | 19.82 | 19.87 | 601000 |
| 2011-02-02 | 19.93 | 19.81 | 506000 |
| 2011-02-01 | 19.84 | 19.96 | 987900 |
| 2011-01-31 | 19.73 | 19.68 | 989700 |
| 2011-01-28 | 20.09 | 19.71 | 578900 |
| 2011-01-27 | 19.85 | 20.06 | 635600 |
| 2011-01-26 | 19.95 | 19.86 | 934100 |
| 2011-01-25 | 19.98 | 19.95 | 945600 |
| 2011-01-24 | 19.74 | 20.02 | 652800 |
| 2011-01-21 | 19.90 | 19.76 | 445000 |
| 2011-01-20 | 19.72 | 19.90 | 513000 |
| 2011-01-19 | 19.90 | 19.83 | 638000 |
| 2011-01-18 | 19.68 | 19.88 | 1176900 |
| 2011-01-14 | 19.69 | 19.77 | 619800 |
| 2011-01-13 | 19.69 | 19.78 | 1017800 |
| 2011-01-12 | 19.59 | 19.75 | 697800 |
| 2011-01-11 | 19.50 | 19.56 | 665200 |
| 2011-01-10 | 19.43 | 19.37 | 1267600 |
| 2011-01-07 | 19.47 | 19.45 | 1543400 |
| 2011-01-06 | 19.58 | 19.44 | 996600 |
| 2011-01-05 | 19.62 | 19.55 | 751000 |
| 2011-01-04 | 19.59 | 19.64 | 1194000 |
| 2011-01-03 | 19.50 | 19.59 | 620000 |
| 2010-12-31 | 19.45 | 19.39 | 462200 |
| 2010-12-30 | 19.45 | 19.49 | 322500 |