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Net income per ordinary share (Tables)
12 Months Ended
Dec. 31, 2017
Net Income Per Ordinary Share Tables  
Basic and diluted number of shares

 

 

 

2017

 

 

2016

 

 

2015

 

 

 

Number of shares

 

Weighted average number of ordinary shares for the purposes of basic and diluted net income per share   2,061,909    2,061,909    2,063,738