Podium is calculated multiplying the number of users' votes by the number of votes and then divided by a coefficient obtained by the popularity rank. Only currently developed languages are considered.
Upon 105 basic-like languages listed, 36 are unfortunately discontinued but at least 48 are currently developed. Sorrowfully we don't have any recent news about 13 of them. But let's face it: 24 are considered valuables and 73 are free!