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Net income per ordinary share
 9 Months Ended
Sep. 30, 2023
Earnings Per Share [Abstract]  
Net income per ordinary share Net income per ordinary share
Basic net income per ordinary share attributable to the Group 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 EndedNine Months Ended
September 30, 2023September 30, 2022September 30, 2023September 30, 2022
Weighted average number of ordinary shares outstanding for basic net income per ordinary share82,215,627 81,582,375 82,001,500 81,481,686 
Effect of dilutive share options and other awards outstanding under share based compensation programs757,261 910,836 735,573 991,835 
Weighted average number of ordinary shares outstanding for diluted net income per ordinary share82,972,888 82,493,211 82,737,073 82,473,521 

Three Months EndedNine Months Ended
September 30, 2023September 30, 2022September 30, 2023September 30, 2022
Net income per Ordinary Share attributable to the Group:
Basic1.99 1.96 4.83 4.76 
Diluted1.97 1.94 4.79 4.70