Azerbaijan is considered the most secular Muslim-majority country. Around 97% of the population are Muslims. 85% of the Muslims are Shia and 15% Sunni; the Republic of Azerbaijan has the second-highest proportion of Shia Muslims of any country in the world. Other faiths are practised by the country's various ethnic groups. Under article 48 of its Constitution, Azerbaijan is a secular state and ensures religious freedom. In a 2006–2008 Gallup poll, only 21% of respondents from Azerbaijan stated that religion is an important part of their daily lives.