All Points Average (A.P.A.) Ranking(updated after E-MC 164)
For each edition (not counting the pre and qualification rounds), the average points awarded per country were find, using the total points divided by the number of voters. Then, the average of those averages were made.
Before E-MC 29, the real points were used for those that didn't vote (because the 50% rule was only a way of finding the final results). From E-MC 29 on, as those who didn't vote got 0 points and substitute countries were used, also the real points are used.