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Net income Per Ordinary Share (Tables)
6 Months Ended
Jun. 30, 2013
Reconciliation of Number of Shares Used in Computation of 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
   
Six Months Ended
 
   
June 30,
   
June 30,
   
June 30,
   
June 30,
 
   
2013
   
2012
   
2013
   
2012
 
Weighted average number of ordinary shares outstanding for
basic net income per ordinary share
    60,724,296       59,978,509       60,555,945       60,032,306  
 
Effect of dilutive share options outstanding
    1,174,607       652,382       1,051,812        575,329  
Weighted average number of ordinary shares for diluted net
income per ordinary share
    61,898,903       60,630,891       61,607,757       60,607,635