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Net income per ordinary share
3 Months Ended
Mar. 31, 2016
Net income per ordinary share
5. Net income per ordinary share

Basic net income per ordinary share has been computed by dividing net income available to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period. Diluted net income per ordinary share is computed by adjusting the weighted average number of ordinary shares outstanding during the period for all potentially dilutive ordinary shares outstanding during the period and adjusting net income for any changes in income or loss that would result from the conversion of such potential ordinary shares. There is no difference in net income used for basic and diluted net income per ordinary share.

The reconciliation of the number of shares used in the computation of basic and diluted net income per ordinary share is as follows:

    
Three Months Ended
 
     
March 31,
   
March 31,
 
   
2016
   
2015
 
             
Weighted average number of ordinary shares outstanding for basic net income per ordinary share
   
55,011,019
     
60,281,059
 
Effect of dilutive share options outstanding
   
1,231,145
     
1,575,288
 
Weighted average number of ordinary shares for diluted net income per ordinary share
   
56,242,164
     
61,856,347