A weird thing happens in Iceland which is that people are born nominally "members of the Church of Iceland". Some portion of their taxes then go to support the

A weird thing happens in Iceland which is that people are born nominally "members of the Church of Iceland". Some portion of their taxes then go to support the church. If they want their taxes to go somewhere else, they have to proactively register as some other faith (and only those who care will bother). So you have a massive discrepancy between how many Icelanders are "statistically Christian" and it's not even Icelanders self-reporting, but the church itself for political/funding reasons. How massive? As of 2017, statistically 70% of Icelandic citizens belonged to the Lutheran Church. But only ~11% actually attend church (http://www.iamreykjavik.com/religion-in-iceland http://www.iamreykjavik.com/religion-in-iceland)