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24. Net Revenue from Sale and Services
12 Months Ended
Dec. 31, 2017
Net Revenue From Sale And Services  
Net Revenue from Sale and Services

 

  2017   2016   2015
           
Gross revenue from sale 82,134,879   79,361,004   77,463,652
Gross revenue from services 728,590   621,823   568,556
Sales taxes (1,936,077)   (1,929,288)   (2,011,860)
Discounts and sales returns (927,557)   (703,305)   (360,777)
Deferred revenue (see Note 21) 7,587   2,721   (4,297)
           
Net revenue from sales and services 80,007,422   77,352,955   75,655,274