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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Earnings Per Share
The following table shows the net income and the number of shares that have been used for the calculation of the basic and diluted earnings per share:
 
   
2020
   
2019
   
2018
 
Net (loss) / profit
   (69,649   (34,071   38,613 
Average number of shares outstanding
   392,555,569    392,314,842    392,302,437 
Basic and diluted earnings per share
   (177.42   (86.85   98.43