22:00The World TonightHuman rights activists say that last year more than 76-thousand people were killed in Syria.BBC Radio 4 Duration: 45 minutes Thu 1st Jan 2015, 22:00 on BBC Radio 4 FMAvailable for over a yearListen nowThe figures suggest 2014 was the worst year for casualties since the outbreak of the civil war in 2011.GenresNewsBrandThe World Tonight Source: BBC Online