How many Persians in iran or Arabs in the middle east dont believe but stay silent? How many atheists in China india Japan Europe canada australia Africa South america and america?
Bet we're more than 5%. And growing ever since the Enlightenment over the past few hundred years.
I don't know how man don't believe but stay silent... How many believe but claim they don't? Seems like if we get into what people feel instead of what they say, we can rationalize all kinds of statistics that aren't valid.
Nihilism is the belief in absolute nothingness. No God, no possibility for one, no spiritual nature, no possibility for any, nothing greater than human minds, no possibility of anything else, ever, end of story. These people represent about 5% of the species and there has never been any civilization where this number was much higher.