| Period |
Price
( ) |
| May. 1, 08 - Jul. 31, 08 |
2,590 |
| Aug. 1, 08 - Aug. 31, 08 |
3,020 |
| Sep. 1, 08 - Oct. 31, 08 |
2,590 |
| Dec. 20, 08 - Jan. 20, 09 |
4,800 |
| Jan. 21, 09 - Apr. 30, 09 |
4,250 |
| May. 1, 09 - Jul. 19, 09 |
3,700 |
| Jul. 20, 09 - Aug. 31, 09 |
4,250 |
| Sep. 1, 09 - Dec. 19, 09 |
3,700 |
| Dec. 20, 09 - Jan. 20, 10 |
4,800 |
|