What percentage of people are actively religious?

I know in America we are something like 65% Christian but only 30% attend church service at least once a month.

Also I find it funny when someone wears a cross but cusses and acts like a degenerate.

It seems the majority of people only identify with a religion because it is part of their family identification and culture but they don’t really believe it all.

Not to say these people are really atheists but not fundamentalists.

I really don’t like super fundamentalist types because they are mostly nasty people who hate everyone outside their religion and will try to force their narrow view of god on others.
What percentage of people are actively religious?
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