(Image credit: Jetpac)

How happy is your country? By analyzing Instagram photos, Jetpac calculates how often people smile in their shots. Brazilians have the biggest grins, smiling in 60.5% of photos. The US smiled 29% of the time, and Japan came in last with only 9.8% of photos with happy faces.

The Happiest Countries In The World (On Instagram) | Co.Exist