| Date | Rate |
|---|---|
| 2011/4/27 | 0.298 |
| 2011/4/26 | 0.298 |
| 2011/4/25 | 0.297 |
| 2011/4/22 | 0.298 |
| 2011/4/21 | 0.298 |
| 2011/4/20 | 0.298 |
| 2011/4/19 | 0.297 |
| 2011/4/18 | 0.295 |
| 2011/4/15 | 0.295 |
| 2011/4/14 | 0.294 |
| 2011/4/13 | 0.294 |
| 2011/4/12 | 0.293 |
| 2011/4/11 | 0.293 |
| 2011/4/8 | 0.292 |
| 2011/4/7 | 0.293 |
| 2011/4/6 | 0.293 |
| 2011/4/1 | 0.293 |
| 2011/3/31 | 0.287 |
| 2011/3/30 | 0.285 |
| 2011/3/29 | 0.283 |
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