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13. Investment properties (Tables)
 12 Months Ended
Dec. 31, 2017
Investment Properties Tables  
Investment properties
  December 31, 2016 Write-offs and disposals Depreciation December 31, 2017
         
Investment properties 57,968 (244) (72) 57,652
Total 57,968 (244) (72) 57,652

  

  December 31, 2015 Transfers Write-offs and disposals Reversal of estimated losses Depreciation December 31, 2016
             
Investment properties 56,957 1,231 (124) 10 (106) 57,968
Total 56,957 1,231 (124) 10 (106) 57,968

 

 

December 31,

 2014

 Transfers Write-offs and disposals Depreciation

December 31,

 2015

           
Investment properties 54,039 9,182 (5,859) (405) 56,957
Total 54,039 9,182 (5,859) (405) 56,957