16 Other liabilities (XLS:) Download millions of € Dec. 31, 2018 Of which: current Dec. 31, 2017 Of which: current Early retirement 1,227 422 1,283 447 Deferred revenue 28 28 2,321 1,759 Liabilities from straight-line leases 2,232 0 2,098 0 Liabilities from other taxes 1,157 1,157 1,133 1,133 Other deferred revenue 616 358 626 424 Liabilities from severance payments 138 137 140 139 Miscellaneous other liabilities 683 552 670 538 6,081 2,654 8,271 4,440 Liabilities from early retirement arrangements for civil servants exist vis-à-vis the Civil Service Pension Fund and arise from payment obligations under agreements that had already been concluded. The obligations are payable in up to seven annual installments following retirement. The increase in liabilities from straight-line leases was mainly attributable to exchange rate effects from the translation of U.S. dollars into euros.