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33. Net financial expense
 12 Months Ended
Dec. 31, 2018
Net Financial Expense  
Net financial expense
     12.31.18     12.31.17     12.31.16 
Financial income          
Commercial interest                     273,457                     177,655                        262,536
Financial interest   398,326   276,149                        122,057
Total financial income   671,783   453,804   384,593
             
Financial expenses          
Interest and other                (1,987,092)                  (819,377)                     (535,721)
Fiscal interest                    (22,752)                    (31,153)                       (18,762)
Commercial interest               (2,958,366)               (1,716,843)                  (2,028,136)
Bank fees and expenses                      (8,509)                      (2,883)                         (6,608)
Total financial expenses   (4,976,719)   (2,570,256)   (2,589,227)
             
Other financial results          
Exchange differences               (2,629,966)                  (564,056)                     (911,819)
Adjustment to present value of receivables                         (327)                         (431)                            5,749
Changes in fair value of financial assets (1)                     746,532                     474,896                        891,773
Net gain from the repurchase of
Corporate Notes		                         4,539                                -                                 90
Other financial expense                    (86,098)                    (78,877)                       (73,096)
Total other financial expense   (1,965,320)   (168,468)   (87,303)
Total net financial expense   (6,270,256)   (2,284,920)   (2,291,937)

 

(1)Includes changes in the fair value of financial assets on cash equivalents as of December 31, 2018, 2017 and 2016 for $ 43.4 million, $ 37.3 million and $ 39.6 million, respectively.