| 2011-02-14 | 32.01 | 33.08 | 166300 |
| 2011-02-11 | 31.45 | 32.14 | 94800 |
| 2011-02-10 | 31.19 | 31.81 | 87300 |
| 2011-02-09 | 31.62 | 31.56 | 58000 |
| 2011-02-08 | 31.91 | 31.85 | 97400 |
| 2011-02-07 | 31.69 | 31.90 | 122300 |
| 2011-02-04 | 31.85 | 31.58 | 53100 |
| 2011-02-03 | 32.32 | 31.94 | 59800 |
| 2011-02-02 | 31.56 | 32.31 | 121600 |
| 2011-02-01 | 30.62 | 31.78 | 170000 |
| 2011-01-31 | 29.99 | 30.10 | 156200 |
| 2011-01-28 | 31.41 | 29.82 | 150900 |
| 2011-01-27 | 31.80 | 31.50 | 42100 |
| 2011-01-26 | 31.06 | 31.71 | 56000 |
| 2011-01-25 | 30.71 | 31.01 | 114600 |
| 2011-01-24 | 31.59 | 30.76 | 184900 |
| 2011-01-21 | 31.61 | 31.54 | 99800 |
| 2011-01-20 | 31.58 | 31.43 | 160500 |
| 2011-01-19 | 32.42 | 31.91 | 191400 |
| 2011-01-18 | 32.46 | 32.41 | 99300 |
| 2011-01-14 | 32.86 | 32.67 | 83300 |
| 2011-01-13 | 32.91 | 32.89 | 102800 |
| 2011-01-12 | 33.07 | 33.10 | 109900 |
| 2011-01-11 | 33.00 | 32.75 | 69300 |
| 2011-01-10 | 31.88 | 32.85 | 100900 |
| 2011-01-07 | 32.64 | 32.10 | 145800 |
| 2011-01-06 | 33.95 | 32.89 | 189700 |
| 2011-01-05 | 34.10 | 34.05 | 208200 |
| 2011-01-04 | 35.47 | 34.29 | 258000 |
| 2011-01-03 | 33.75 | 35.25 | 203600 |
| 2010-12-31 | 32.78 | 32.41 | 48700 |
| 2010-12-30 | 32.95 | 32.95 | 88400 |
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