"Countries with a high percentage of non-believers are among the freest, most stable, best-educated, and healthiest nations on earth.
When nations are ranked according to a human-development index, which measures such factors as life expectancy, literacy rates, and educational attainment, the five highest-ranked countries - Norway, Sweden, Australia, Canada, and the Netherlands - all have high degrees of non-belief. Of the fifty countries at the bottom of the index, all are intensely religious. The nations with the highest homicide rates tend to be more religious; those with the greatest levels of gender equality are the least religious.
These associations say nothing about whether atheism leads to positive social indicators or the other way around. But the idea that atheists are somehow less moral, honest, or trustworthy has been disproven by study after study."
http://hdr.undp.org/en/content/latest-human-development-index-ranking
(Note: report circa 2020, based on 2019 data):