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31. Other operating income (expenses), net (Tables)
 12 Months Ended
Dec. 31, 2018
Other Operating Income Expenses Net Tables Abstract  
Other operating income (expenses), net
 

2018

2017

2016

       
Other operating income, net 93,089 75,410 62,570
Other operating expenses

(64,498)

(81,089)

(57,848)

       
Other operating income (expenses), net

28,591

(5,679)

4,722