According to the nonprofit Institute for Economics and Peace, the thinly populated island in the midst of the North Atlantic has retained its place as the most peaceful country in the world.

The institute released its Global Peace Index for 2015this week, which ranks 162 nations around the globe based on factors like the level of violent crime, involvement in conflicts and the degree of militarization.

Six out of the top 10 most peaceful countries were European, with Denmark and Austria holding the second and third spots.

“Europe maintained its position as the most peaceful region in the world, supported by a lack of domestic and external conflicts,” the report said.

Nigeria ranked 151 in the overall ranking and 40th in Africa.

But that glowing review is helped by the fact that violence-plagued Ukraine is lumped into a different region: Russia and Eurasia.

Ukraine suffered the second biggest deterioration in its rating over the past year as pro-Russian separatists clashed with government forces.

The only country that fared worse was Libya, which has “sunk into a low-level civil war between Islamist and nationalist groups,” the report said.

War-ravaged Syria remained at the bottom of the rankings. And Iraq, the other country where the Islamic militant group ISIS holds large areas of territory, dropped below South Sudan and Afghanistan to second last place.

The United States is in the bottom half of the index, scoring badly in terms of militarization, homicides and fear of violence. Its ranking improved somewhat from a year earlier, though, rising from 101st place to 94th.

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