| 6-K | - | 2012-09-18 | 2012-09-18 |
| 6-K | - | 2012-09-12 | 2012-09-12 |
| SEC correspondence | UPLOAD | 2012-09-07 | - |
| Company correspondence | CORRESP | 2012-08-06 | - |
| Passive ownership stake | SC 13G | 2012-07-27 | - |
| 6-K | - | 2012-07-25 | 2012-07-25 |
| SEC correspondence | UPLOAD | 2012-07-23 | - |
| 6-K | - | 2012-06-14 | 2012-06-14 |
| 6-K | - | 2012-05-17 | 2012-05-17 |
| Passive ownership stake (update) | SC 13G/A | 2012-05-10 | - |
| 20-F | - | 2012-03-30 | 2011-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2012-03-06 | - |
| 6-K | - | 2012-02-21 | 2012-02-21 |
| Passive ownership stake (update) | SC 13G/A | 2012-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2012-02-14 | - |
| Passive ownership stake | SC 13G | 2012-02-10 | - |
| Passive ownership stake (update) | SC 13G/A | 2012-02-09 | - |
| Passive ownership stake (update) | SC 13G/A | 2012-02-08 | - |
| Passive ownership stake (update) | SC 13G/A | 2012-02-08 | - |
| Passive ownership stake | SC 13G | 2012-02-08 | - |
| Passive ownership stake | SC 13G | 2012-02-06 | - |
| Passive ownership stake | SC 13G | 2012-01-17 | - |
| Passive ownership stake (update) | SC 13G/A | 2011-12-12 | - |
| 6-K | - | 2011-11-14 | 2011-11-01 |
| 6-K | - | 2011-09-30 | 2011-09-30 |
| 6-K | - | 2011-09-30 | 2011-09-01 |
| SEC correspondence | UPLOAD | 2011-09-30 | - |
| Company correspondence | CORRESP | 2011-09-27 | - |
| 6-K | - | 2011-09-23 | 2011-09-01 |
| SEC correspondence | UPLOAD | 2011-09-16 | - |
| Company correspondence | CORRESP | 2011-09-06 | - |
| Company correspondence | CORRESP | 2011-08-08 | - |
| SEC correspondence | UPLOAD | 2011-08-03 | - |
| 6-K | - | 2011-08-02 | 2011-08-01 |
| 6-K | - | 2011-05-17 | 2011-05-01 |
| 20-F | - | 2011-03-31 | 2010-12-31 |
| Passive ownership stake | SC 13G | 2011-02-24 | - |
| 6-K | - | 2011-02-14 | 2011-02-01 |
| Passive ownership stake (update) | SC 13G/A | 2011-02-14 | - |
| Passive ownership stake | SC 13G | 2011-02-10 | - |
| Passive ownership stake (update) | SC 13G/A | 2011-02-09 | - |
| Passive ownership stake | SC 13G | 2011-02-09 | - |
| 6-K | - | 2010-11-03 | 2010-11-01 |
| SEC correspondence | UPLOAD | 2010-10-12 | - |
| Company correspondence | CORRESP | 2010-09-10 | - |
| 6-K | - | 2010-08-30 | 2010-08-01 |
| Company correspondence | CORRESP | 2010-08-17 | - |
| SEC correspondence | UPLOAD | 2010-08-12 | - |
| 6-K | - | 2010-08-10 | 2010-08-01 |
| Passive ownership stake (update) | SC 13G/A | 2010-07-09 | - |
