The World Happiness Report 2016 Update, which ranks 156 countries by their happiness levels, was released last week.

Denmark, Iceland, Norway and Finland may get little sunlight and daylight for months on end, but people living there continue to be happier than most. These countries once again top a poll of the happiest people on Earth, with only Switzerland (second place) breaking up a Nordic clean sweep of the top-five places. Happiness clearly has less to do with the weather, and more to do with factors like social cohesiveness and a strong safety net.

Here is a chart showing the top-ten.