25. Per share amounts

Per share amounts have been calculated based on the weighted average number of common shares outstanding during the period. The weighted average number of paid shares outstanding in 2012 was 395,234,091 (2011 - 394,661,591).

  2012 2011
Basic earnings per share computation    
Net earnings attributable to equity holders $266,136 $450,404
Weighted average common shares outstanding 395,234 394,662
Basic earnings per common share $0.67 $1.14
Diluted earnings per share computation    
Net earnings attributable to equity holders $266,136 $450,404
Weighted average common shares outstanding 395,234 394,662
Dilutive effect of stock options 605 817
Weighted average common shares outstanding, assuming dilution 395,839 395,479
Diluted earnings per common share $0.67 $1.14