User: What is the happiness index report and which country tops the happiness index in the world
Assistant: United nations every year in collaboration with sustainable development solution network perform survey and release the report global happiness index. As of March 2023, Finland has been ranked the happiest country in the world six times in a row.

The World Happiness Report is a publication that contains articles and rankings of national happiness, based on respondent ratings of their own lives, which the report also correlates with various (quality of) life factors