In 2016, Italy had about 5.05 million foreign residents, making up 8.3% of the total population. The figures include more than half a million children born in Italy to foreign nationals (second generation immigrants) but exclude foreign nationals who have subsequently acquired Italian citizenship; in 2016, about 201,000 people became Italian citizens. The official figures also exclude illegal immigrants, who estimated to number at least 670,000 as of 2008.