 A substantial proportion of Slovenes (59%) have a certain level of knowledge of the Croatian language.The main religions of Croatia are Roman Catholicism 86.28%, Eastern Orthodoxy 4.44%, Protestantism 0.34%, other Christianity 0.30%, and Islam 1.47%.In the Eurostat Eurobarometer Poll of 2005, 67% of the population of Croatia responded that "they believe there is a God" and 7% said they do not believe "there is any sort of spirit, God, or life force", while 25% expressed a belief in "some sort of spirit or life force".