pre_text: No deferred tax assets were capitalised for the following tax loss carry-forwards and interest carry-forwards or temporary differences because realisation of the assets in the short-to-medium term is not expected: The loss carry-forwards as of the closing date predominantly concern the German consolidation group. They can be carried forward without limitation.
table: € million 30/9/2018 30/9/2019
table: Corporate tax losses 4,320 4,883
table: Trade tax losses 3,296 3,679
table: Interest carry-forwards 57 83
table: Temporary differences 104 120
question: Analyse this data from a financial earnings document. What was the change in interest carry-forwards in FY2019 from FY2018?