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Income Statement - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Profit or loss [abstract] |  |  |
Net operating income | R$ 16,085,094 | R$ 14,608,233 | R$ 14,098,208
Cost of services | (9,086,456) | (8,778,963) | (9,013,120)
Gross profit | 6,998,638 | 5,829,270 | 5,085,088
Selling expenses | (693,480) | (686,012) | (639,559)
Allowance for doubtful accounts | (166,727) | (82,681) | (90,488)
Administrative expenses | (996,877) | (1,098,990) | (934,896)
Other operating income (expenses), net | 28,591 | (5,679) | 4,722
Equity in results of investments in affiliaties | 6,510 | 5,760 | 4,740
Profit from operations before finance income (expenses) and income tax and social contribution | 5,176,655 | 3,961,668 | 3,429,607
Financial expenses | (807,967) | (688,280) | (839,891)
Financial revenues | 446,302 | 326,244 | 448,710
Exchange result, net | (902,671) | (96,018) | 1,090,628
Financial result, net | (1,264,336) | (458,054) | 699,447
Profit before income tax and social contribution | 3,912,319 | 3,503,614 | 4,129,054
Income tax and social contribution |  |  |
Current | (852,655) | (882,787) | (1,121,289)
Deferred | (224,596) | (101,517) | (60,667)
Income tax and social contribution, total | (1,077,251) | (984,304) | (1,181,956)
Profit for the year | R$ 2,835,068 | R$ 2,519,310 | R$ 2,947,098
Earnings per share - basic and diluted (in reais) | R$ 4.15 | R$ 3.69 | R$ 4.31

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