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7. Cash and cash equivalents (Tables)

12 Months Ended

Dec. 31, 2018

Cash And Cash Equivalents

Cash and cash equivalents

	December 31, 2018	December 31, 2017
Cash and banks	151,558	171,951
Cash equivalents	2,877,633	2,111,096
	3,029,191	2,283,047

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