UN-sponsored index, based on data from 2020-2022, predating government's divisive judicial overhaul plan, is again topped by Finland, with US 15th, Britain 19th and France 21st

‘It’s true — when you smile it makes you happier,’ says Israeli psychologist from the 19-country research group, suggesting smile muscles trigger happy feelings

Finland again tops the UN-sponsored list, with the US in 16th, Britain 17th, France 20th; research was completed before Russia's invasion of Ukraine