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CONSOLIDATED BALANCE SHEETS (Parenthetical)	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Common shares, shares issued	306,371,032	302,448,934
Common shares, shares outstanding	306,371,032	302,448,934

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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