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Administrative Expenses (Details) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLP ($) | Dec. 31, 2016 CLP ($) | Dec. 31, 2015 CLP ($)
Administrative Expenses |  |  |  |
General administrative expenses |  | $ 211,611 | $ 209,304 | $ 194,159
Outsources services |  | 51,949 | 46,923 | 47,932
Marketing expenses |  | 30,698 | 32,781 | 32,509
Taxes, payroll taxes and contributions |  | 14,242 | 14,161 | 12,513
Board expenses |  | 2,955 | 3,175 | 2,861
Total | $ 506,077 | $ 311,455 | $ 306,344 | $ 289,974

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