So which is 2018's official happiest country in the world? Finland! And here's the rest of the top 10:
8. New Zealand
The annual World Happiness Report is produced by the United Nations Sustainable Development Solutions Network. In it, 156 countries are ranked by their happiness levels. The happiness of immigrants in 117 of these countries is also studied. So, this year Finland is not only the happiest country, but also has the happiest immigrant population in the world.
And what about the U.S.? It's ranked 18th, dropping down four spots from last year. Yikes.
"U.S. policymakers should take note," the study's co-editor Jeffrey D. Sachs said. "The U.S. happiness ranking is falling, in part because of the ongoing epidemics of obesity, substance abuse, and untreated depression."