Unlike the population of Iran, many Iranian Americans are non-Muslim due to the religious composition of those fleeing the Iranian Revolution, which included a disproportionate share of Iran's religious minorities, as well as subsequent ex-Muslim asylum seekers and other conversions away from Islam. Many Iranian Americans identify as irreligious or Shiite, but a full one-fifth are Christians, Jews, Baháʼís, or Zoroastrians. Additionally, there are also some Iranian Mandaeans, but they are very small in number. According to Pew Research, about 22% of those who left Islam in the United States are Iranian Americans.