Factbox

According to the International Organization for Migration, by 2013, there were 232 million migrants worldwide. Twenty-two percent were highly skilled and 33 percent had intermediate skills.

According to IOM, labor migration (workers and families) accounts for 90 percent of total migration worldwide.

According to the Migration Policy Institute, roughly two-thirds of immigrants live in high-income countries, a proportion that has changed little since 2008. In the last 30 years, "immigrant density" (proportion of foreign-born per capita) in high-income countries has doubled to almost 9 percent of the population.