Investor relations
The Company
Corporate Governance
Financial Information & Statistics
Annual Report and 20-F
Registration and Requirements
Quarterly Results
| Period | Press Release | Webcast | Presentation |
| 1 Q 2011 Results |
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| 2 Q 2011 Results |
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| 3 Q 2011 Results |
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| 4 Q 2011 Results |
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Historical
| Cumulative as of 4Q 2011 | |
| Operating Statistics |
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| Financial information |
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