As of , Israel's population was an estimated , of whom 74.2% were recorded by the civil government as Jews. Arabs accounted for 20.9% of the population, while non-Arab Christians and people who have no religion listed in the civil registry made up 4.8%. Over the last decade, large numbers of migrant workers from Romania, Thailand, China, Africa, and South America have settled in Israel. Exact figures are unknown, as many of them are living in the country illegally, but estimates run from 166,000 to 203,000. By June 2012, approximately 60,000 African migrants had entered Israel. About 92% of Israelis live in urban areas. Data published by the OECD in 2016 estimated the average life expectancy of Israelis at 82.5 years, making it the 6th-highest in the world.