As of 2010, over 1.6 billion or about 23.4% of the world population are Muslims. The term Muslim world (also known as the Ummah or Islamosphere) has several meanings. In a religious sense, the Islamic Ummah refers to those who adhere to the teachings of Islam, referred to as Muslims. In a cultural sense, the Muslim Ummah refers to Islamic civilization,

Check the map from 2000, they even have France as an islamic country (5-15% which shows a trend)
[link to muhammadnazeefali.com]