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Earnings per share
12 Months Ended
Dec. 31, 2018
Weighted average ordinary shares and adjusted weighted average ordinary shares [abstract]  
Earnings per share
30. Earnings per share
The weighted average number of ordinary shares for the purposes of diluted earnings per share reconciles to the weighted average number of ordinary shares used in the calculation of basic earnings per share as follows:
 
2018

2017

 
 
 
Weighted average number of ordinary shares used in the calculation
 
 
of basic earnings per share
158,509

150,531

Diluted impact of stock options


 
 
 
Weighted average number of ordinary shares used in the calculation
 
 
of diluted earnings per share
158,509

150,531