History price
| Date | Open price | Highest price | Lowest price | Close price | Trade volume |
|---|---|---|---|---|---|
| 2011-06-08 | 19.53 | 19.93 | 18.93 | 19.83 | 194,920 |
| 2011-06-07 | 19.13 | 19.13 | 19.13 | 19.13 | 94,970 |
| 2011-06-06 | 17.32 | 18.22 | 17.11 | 18.22 | 128,060 |
| 2011-06-03 | 18.52 | 18.52 | 17.11 | 17.42 | 662,790 |
| 2011-06-02 | 17.72 | 17.72 | 17.72 | 17.72 | 50,740 |
| 2011-06-01 | 16.11 | 16.91 | 16.11 | 16.91 | 80,780 |
| 2011-05-31 | 15.5 | 16.21 | 15.4 | 16.11 | 69,880 |
| 2011-05-30 | 17.01 | 17.01 | 16.21 | 16.21 | 49,410 |
| 2011-05-27 | 16.61 | 17.01 | 16.21 | 17.01 | 123,690 |
| 2011-05-26 | 14.8 | 16.21 | 14.8 | 16.21 | 217,990 |
| 2011-05-25 | 15.5 | 15.71 | 15.5 | 15.5 | 121,620 |
| 2011-05-24 | 16.61 | 16.91 | 16.31 | 16.31 | 100,500 |
| 2011-05-23 | 17.82 | 17.82 | 17.11 | 17.11 | 71,310 |
| 2011-05-20 | 18.83 | 18.83 | 17.92 | 17.92 | 39,110 |
| 2011-05-19 | 18.93 | 18.93 | 18.42 | 18.52 | 23,080 |
| 2011-05-18 | 19.13 | 20.03 | 18.93 | 18.93 | 42,790 |
| 2011-05-17 | 19.93 | 20.34 | 19.43 | 19.63 | 28,270 |
| 2011-05-16 | 21.04 | 21.04 | 20.14 | 20.14 | 24,680 |
| 2011-05-13 | 21.04 | 21.04 | 20.74 | 20.74 | 16,990 |
| 2011-05-12 | 21.04 | 21.14 | 20.84 | 21.14 | 16,920 |