Traditionally settled communities of Muslim Arabs comprise about 70% of the Arab population in Israel. In 2010, the average number of children per mother was 3.84, dropping from 3.97 in 2008. The Muslim population is mostly young: 42% of Muslims are under the age of 15. The median age of Muslim Israelis is 18, while the median age of Jewish Israelis is 30. The percentage of people over 65 is less than 3% for Muslims, compared with 12% for the Jewish population.