There is strong correlation of top countries in the list with the list of happiest countries in the world. https://worldpopulationreview.com/country-rankings/h

There is strong correlation of top countries in the list with the list of happiest countries in the world. https://worldpopulationreview.com/country-rankings/happiest-countries-in-the-world https://worldpopulationreview.com/country-rankings/happiest-... Top 10 in the paper (from appendix): Iceland, Switzerland, Norway, Sweden, Finland, Denmark, Netherlands, Canada, Estonia, Luxembourg Top 10 happiest countries: Finland, Denmark, Switzerland, Iceland, Norway, Netherlands, Sweden, New Zealand, Austria, Luxembourg