In 2012, Muslims in Russia were 9,400,000 or 6.5% of the total population. However, the "Arena Atlas" did not survey the populations of two federal subjects with Islamic majorities which together had a population of nearly 2 million, namely Chechnya and Ingushetia, thus the total number of Muslims may be slightly larger. The Muslim community in Russia continues to grow, having reached 25 million in 2018, according to the grand mufti of Russia, Sheikh Rawil Gaynetdin. Among these Muslims, 6,700,000 or 4.6% of the total population of Russia were not affiliated with any Islamic schools and branches. This is mainly because it is not essential for Muslims to be affiliated with any specific sect or organisation. Those who are unaffiliated are mostly Sunni Muslims. These unaffiliated Muslims constitute significant percentages of over 10% in Kabardino-Balkaria (49%), Bashkortostan (38%), Karachay-Cherkessia (34%), Tatarstan (31%), Yamalia (13%), Orenburg Oblast (11%), Adygea (11%) and Astrakhan Oblast (11%). Most of the regions of Siberia have an unaffiliated Muslim population of 1% to 2%.