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21. NET SALES AND SERVICES REVENUE (Tables)
 12 Months Ended
Dec. 31, 2017
Net Sales And Services Revenue Tables  
Net sales and services revenue

Net sales and services revenue is comprised as follows:

 

    12/31/2017   12/31/2016  

12/31/2015

Gross revenue            
Domestic market              11,487,011   10,206,195              10,212,748
Foreign market                9,980,572   9,571,630                7,725,818
               21,467,583   19,777,825              17,938,566
Deductions            
Sales returns and discounts                 (262,989)   (190,415)                 (297,957)
Taxes on sales              (2,679,993)   (2,438,461)              (2,378,912)
               (2,942,982)   (2,628,876)              (2,676,869)
Net revenue              18,524,601   17,148,949              15,261,697