<sod >The tragedies push the known number of asylum seekers who have died attempting to reach Europe this year over 4,000, with 2016 now officially the deadliest year on record.< eod>< sod > The tragedies push the known number of asylum seekers who have died attempting to reach Europe this year to more thanÂ 4,500, with 2016 now officially the deadliest year on record.< eod>