According to Arena Atlas, Orthodox Christian believers constituted 42.6% of the total population of Russia in 2012, while according to survey by the Pew Forum in 2017, Orthodox Christian believers constituted 71% of the total population of Russia. Most of them were members of the Russian Orthodox Church, while small minorities were Old Believers and Orthodox Christian believers who either did not belong to any church or belonged to non-Russian Orthodox churches (including the Armenian Apostolic Church and the Georgian Orthodox Church). Unaffiliated Orthodox Christians or non-Russian Orthodox Christians were 1.5% (2,100,000) of the total population. Minor Orthodox Christian churches are represented among ethnic minorities of Ukrainians, Georgians and Armenians. Unaffiliated Orthodox Christians and minorities of non-Russian Orthodox Christians comprised over 4% of the population in Tyumen Oblast (9%), Irkutsk Oblast (6%), the Jewish Autonomous Oblast (6%), Chelyabinsk Oblast (5%), Astrakhan Oblast (4%) and Chuvashia (4%). Cossacks, historically and some of them also in modern Russia, are among the fiercer supporters of Orthodox theocratic monarchism.