| 2011-04-07 | 2.53 | 2.49 | 70800 |
| 2011-04-06 | 2.49 | 2.54 | 81500 |
| 2011-04-05 | 2.47 | 2.49 | 83300 |
| 2011-04-04 | 2.53 | 2.48 | 168400 |
| 2011-04-01 | 2.55 | 2.53 | 60100 |
| 2011-03-31 | 2.55 | 2.55 | 181200 |
| 2011-03-30 | 2.56 | 2.55 | 116800 |
| 2011-03-29 | 2.50 | 2.55 | 61400 |
| 2011-03-28 | 2.51 | 2.50 | 63000 |
| 2011-03-25 | 2.57 | 2.50 | 89600 |
| 2011-03-24 | 2.55 | 2.56 | 57800 |
| 2011-03-23 | 2.53 | 2.56 | 37400 |
| 2011-03-22 | 2.59 | 2.54 | 75900 |
| 2011-03-21 | 2.55 | 2.60 | 239300 |
| 2011-03-18 | 2.41 | 2.54 | 215500 |
| 2011-03-17 | 2.44 | 2.40 | 76600 |
| 2011-03-16 | 2.40 | 2.41 | 155700 |
| 2011-03-15 | 2.42 | 2.42 | 106000 |
| 2011-03-14 | 2.50 | 2.48 | 147500 |
| 2011-03-11 | 2.55 | 2.54 | 221300 |
| 2011-03-10 | 2.56 | 2.55 | 183800 |
| 2011-03-09 | 2.57 | 2.59 | 142500 |
| 2011-03-08 | 2.55 | 2.59 | 202700 |
| 2011-03-07 | 2.56 | 2.57 | 114600 |
| 2011-03-04 | 2.59 | 2.58 | 93900 |
| 2011-03-03 | 2.56 | 2.60 | 172900 |
| 2011-03-02 | 2.60 | 2.54 | 217300 |
| 2011-03-01 | 2.59 | 2.61 | 241500 |
| 2011-02-28 | 2.65 | 2.60 | 334800 |
| 2011-02-25 | 2.62 | 2.65 | 268500 |
| 2011-02-24 | 2.56 | 2.63 | 164200 |
| 2011-02-23 | 2.49 | 2.57 | 143900 |
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